If you want to install the Unity 3D software on Fedora 31 Linux distro then you can read my tutorial from this webpage.
To run Unity software you need to have one good hardware.
This install require to upload the license file even you use a free or pro license.
tutorials, tips, tricks, commands, programming, linux, windows, database, sql, python, programming language, Fedora, drawing, painting, tutorial, tutorials
Tuesday, February 25, 2020
Tuesday, February 18, 2020
Fedora 31 : The Fyne UI toolkit for Go programming language.
Today I will show you how to use a UI toolkit with the Go programming. language.
The development team comes with this toolkit at the GitHub official webpage.
Fyne is an easy to use UI toolkit and app API written in Go. It is designed to build applications that run on desktop and mobile devices with a single codebase...
Fyne is an easy to use UI toolkit and app API written in Go. It is designed to build applications that run on desktop and mobile devices with a single codebase...
[mythcat@desk ~]$ sudo dnf install golang
[sudo] password for mythcat:
...
Installed:
golang-1.13.6-1.fc31.x86_64 golang-bin-1.13.6-1.fc31.x86_64
golang-src-1.13.6-1.fc31.noarch mercurial-4.9-2.fc31.x86_64
Complete!
First is need to install these packages with DNF tool:
[root@desk mythcat]# dnf install libX11-devel libXcursor-devel libXrandr-devel libXinerama-devel
mesa-libGL-devel libXi-devel
Last metadata expiration check: 0:04:28 ago on Sun 16 Feb 2020 12:25:04 PM EET.
Package libX11-devel-1.6.9-2.fc31.x86_64 is already installed.
Package mesa-libGL-devel-19.2.8-1.fc31.x86_64 is already installed.
Package libXi-devel-1.7.10-2.fc31.x86_64 is already installed.
Dependencies resolved.
...
Installed:
libXcursor-devel-1.1.15-6.fc31.x86_64 libXinerama-devel-1.1.4-4.fc31.x86_64
libXrandr-devel-1.5.2-2.fc31.x86_64 libXrender-devel-0.9.10-10.fc31.x86_64
Complete!
Let's install the fyne toolkit and the demo application:[mythcat@desk ~]$ go get fyne.io/fyne
[mythcat@desk ~]$ go get fyne.io/fyne/cmd/fyne_demo/
I run the demo with this command and works very well:[mythcat@desk ~]$ go run /home/mythcat/go/src/fyne.io/fyne/cmd/fyne_demo/main.go
Posted by
Cătălin George Feștilă
Labels:
2020,
Fedora,
Fedora 31,
go,
golang,
programming,
tutorial,
tutorials
Sunday, February 16, 2020
Fedora 31 : Can be better? part 006.
I try to use the Selinux MLS with Fedora 31 and I wrote on my last article about Fedora 31 : Can be better? part 005.
After relabeling the files and start the environment I get multiple errors and I ask an answer at fedoraproject lists:
This is an example of the problem of implementing MLS in Fedora and can be remedied because MLS Selinux is old in implementing Selinux.
SELinux is preventing su from open access on the file /var/log/lastlog.
***** Plugin catchall (100. confidence) suggests **************************
If you believe that su should be allowed open access on the lastlog file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'su' --raw | audit2allow -M my-su
# semodule -X 300 -i my-su.pp
I try to fix it but I got this error:
[root@desk mythcat]# ausearch -c 'su' --raw | audit2allow -M my-su
compilation failed:
my-su.te:36:ERROR 'syntax error' at token 'mlsconstrain' on line 36:
mlsconstrain file { write create setattr relabelfrom append unlink link rename mounton } ((l1 eq l2 -Fail-)
or (t1 == mlsfilewritetoclr -Fail-) and (h1 dom l2 -Fail-) and (l1 domby l2) or (t2 ==
mlsfilewriteinrange -Fail-)
and (l1 dom l2 -Fail-) an
# mlsconstrain file { read getattr execute } ((l1 dom l2 -Fail-) or (t1 ==
mlsfilereadtoclr -Fail-)
and (h1 dom l2 -Fail-) or (t1 == mlsfileread -Fail-) or (t2 == mlstrustedobject -Fail-) ); Constraint DENIED
/usr/bin/checkmodule: error(s) encountered while parsing configuration
[root@desk mythcat]# ausearch -c 'su' --raw | audit2allow -M my-su
compilation failed:
my-su.te:36:ERROR 'syntax error' at token 'mlsconstrain' on line 36:
mlsconstrain file { write create setattr relabelfrom append unlink link rename mounton } ((l1 eq l2 -Fail-)
or (t1 == mlsfilewritetoclr -Fail-) and (h1 dom l2 -Fail-) and (l1 domby l2) or (t2 ==
mlsfilewriteinrange -Fail-)
and (l1 dom l2 -Fail-) an
# mlsconstrain file { read getattr execute } ((l1 dom l2 -Fail-) or (t1 ==
mlsfilereadtoclr -Fail-)
and (h1 dom l2 -Fail-) or (t1 == mlsfileread -Fail-) or (t2 == mlstrustedobject -Fail-) ); Constraint DENIED
/usr/bin/checkmodule: error(s) encountered while parsing configuration...
Posted by
Cătălin George Feștilă
Labels:
2020,
Fedora,
Fedora 31,
linux,
linux tools,
selinux,
SELinux MLS,
tool,
tools,
tutorial,
tutorials
Tuesday, February 11, 2020
Fedora 31 : Install the drawing GNOME with DNF and flatpak.
You can use the DNF tool:
[root@desk mythcat]# dnf search gnome | grep drawing
Last metadata expiration check: 1:53:53 ago on Tue 11 Feb 2020 05:28:15 PM EET.
drawing.noarch : Drawing application for the GNOME desktop
[root@desk mythcat]# dnf install drawing.noarch
Last metadata expiration check: 1:54:28 ago on Tue 11 Feb 2020 05:28:15 PM EET.
Dependencies resolved.
================================================================================
Package Architecture Version Repository Size
================================================================================
Installing:
drawing noarch 0.4.9-1.fc31 updates 1.0 M
Transaction Summary
================================================================================
Install 1 Package
Total download size: 1.0 M
Installed size: 1.5 M
Is this ok [y/N]: y
Downloading Packages:
drawing-0.4.9-1.fc31.noarch.rpm 1.4 MB/s | 1.0 MB 00:00
--------------------------------------------------------------------------------
Total 601 kB/s | 1.0 MB 00:01
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : drawing-0.4.9-1.fc31.noarch 1/1
Running scriptlet: drawing-0.4.9-1.fc31.noarch 1/1
Verifying : drawing-0.4.9-1.fc31.noarch 1/1
Installed:
drawing-0.4.9-1.fc31.noarch
Complete!
This install use the flatpak tool:
[root@desk mythcat]# dnf install flatpak
Last metadata expiration check: 1:47:49 ago on Tue 11 Feb 2020 05:28:15 PM EET.
Dependencies resolved.
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
flatpak x86_64 1.4.3-3.fc31 updates 1.1 M
Installing dependencies:
flatpak-selinux noarch 1.4.3-3.fc31 updates 24 k
flatpak-session-helper x86_64 1.4.3-3.fc31 updates 72 k
Installing weak dependencies:
p11-kit-server x86_64 0.23.20-1.fc31 updates 186 k
xdg-desktop-portal x86_64 1.4.2-3.fc31 fedora 386 k
xdg-desktop-portal-gtk x86_64 1.4.0-1.fc31 fedora 212 k
Transaction Summary
================================================================================
Install 6 Packages
Total download size: 1.9 M
Installed size: 7.7 M
Is this ok [y/N]: y
...
Installed:
flatpak-1.4.3-3.fc31.x86_64
flatpak-selinux-1.4.3-3.fc31.noarch
flatpak-session-helper-1.4.3-3.fc31.x86_64
p11-kit-server-0.23.20-1.fc31.x86_64
xdg-desktop-portal-1.4.2-3.fc31.x86_64
xdg-desktop-portal-gtk-1.4.0-1.fc31.x86_64
Complete!
Let's install the flatpakrepo:
[mythcat@desk ~]$ flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
Note that the directories
'/var/lib/flatpak/exports/share'
'/home/mythcat/.local/share/flatpak/exports/share'
are not in the search path set by the XDG_DATA_DIRS environment variable, so
applications installed by Flatpak may not appear on your desktop until the
session is restarted.
[mythcat@desk ~]$ flatpak install flathub com.github.maoschanz.drawing
Note that the directories
'/var/lib/flatpak/exports/share'
'/home/mythcat/.local/share/flatpak/exports/share'
are not in the search path set by the XDG_DATA_DIRS environment variable, so
applications installed by Flatpak may not appear on your desktop until the
session is restarted.
Looking for matches…
Required runtime for com.github.maoschanz.drawing/x86_64/stable (runtime/org.gnome.Platform/x86_64/3.34)
found in remote flathub
Do you want to install it? [Y/n]: Y
com.github.maoschanz.drawing permissions:
ipc wayland x11
ID Arch Branch Remote Download
1. [✓] org.gnome.Platform x86_64 3.34 flathub 304.2 MB / 318.5 MB
2. [✓] org.gnome.Platform.Locale x86_64 3.34 flathub 16.8 kB / 322.0 MB
3. [✓] org.freedesktop.Platform.GL.default x86_64 19.08 flathub 92.6 MB / 92.6 MB
4. [✓] org.freedesktop.Platform.VAAPI.Intel x86_64 19.08 flathub 8.7 MB / 8.7 MB
5. [✗] org.freedesktop.Platform.openh264 x86_64 19.08 flathub 594.2 kB / 593.4 kB
6. [✓] com.github.maoschanz.drawing x86_64 stable flathub 1.0 MB / 1.1 MB
7. [✓] com.github.maoschanz.drawing.Locale x86_64 stable flathub 1.7 kB / 86.2 kB
Warning: org.freedesktop.Platform.openh264 not installed
Installation complete.
[mythcat@desk ~]$ flatpak install org.freedesktop.Platform/x86_64/19.08
Note that the directories
'/var/lib/flatpak/exports/share'
'/home/mythcat/.local/share/flatpak/exports/share'
are not in the search path set by the XDG_DATA_DIRS environment variable, so
applications installed by Flatpak may not appear on your desktop until the
session is restarted.
Looking for matches…
Found similar ref(s) for ‘org.freedesktop.Platform/x86_64/19.08’ in remote ‘flathub’ (system).
Use this remote? [Y/n]: Y
ID Arch Branch Remote Download
1. [✓] org.freedesktop.Platform x86_64 19.08 flathub 11.5 MB / 238.1 MB
2. [✓] org.freedesktop.Platform.Locale x86_64 19.08 flathub 16.7 kB / 318.2 MB
3. [✓] org.freedesktop.Platform.openh264 x86_64 19.08 flathub 593.6 kB / 593.4 kB
Installation complete.
Restart the session and run it with this command:
[mythcat@desk ~]$ flatpak run com.github.maoschanz.drawing
Sunday, February 2, 2020
Fedora 31 : Can be better? part 005.
Today we have once again dealt with this topic on the possibilities of improving the Fedora distro.
This time the adventure turned to the Selinux system switching to SELinux MLS.
Let's test the SELinux Fedora 31 from default targeted to mls.
First let's see the users:
After I boot and relabel all files I got errors about Gtk-Messages.
I remove my old Cinnamon with this command:
First, these alerts are more than 250.
After I fix some of these now I see only 50.
I think this problem with changing the SELinux type can be improved.
This time the adventure turned to the Selinux system switching to SELinux MLS.
Let's test the SELinux Fedora 31 from default targeted to mls.
First let's see the users:
[root@desk mythcat]# semanage user -l
Labeling MLS/ MLS/
SELinux User Prefix MCS Level MCS Range SELinux Roles
guest_u user s0 s0 guest_r
root user s0 s0-s0:c0.c1023 staff_r sysadm_r system_r unconfined_r
staff_u user s0 s0-s0:c0.c1023 staff_r sysadm_r system_r unconfined_r
sysadm_u user s0 s0-s0:c0.c1023 sysadm_r
system_u user s0 s0-s0:c0.c1023 system_r unconfined_r
unconfined_u user s0 s0-s0:c0.c1023 system_r unconfined_r
user_u user s0 s0 user_r
xguest_u user s0 s0 xguest_r
To use the MLS you need to change this file:
[root@desk mythcat]# vim /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=enforcing
# SELINUXTYPE= can take one of these three values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
The changes are:
#SELINUX=enforcing
SELINUX=permissive
...
#SELINUXTYPE=targeted
SELINUXTYPE=mls
Is need to install these packages:
[root@desk mythcat]# dnf search mls | grep selinux
Last metadata expiration check: 2:45:09 ago on Sun 02 Feb 2020 01:28:54 PM EET.
selinux-policy-mls.noarch : SELinux mls base policy
[root@desk mythcat]# dnf install selinux-policy-mls.noarch
...
Installed:
mcstrans-2.9-2.fc31.x86_64
policycoreutils-newrole-2.9-5.fc31.x86_64
selinux-policy-mls-3.14.4-45.fc31.noarch
Complete!
These commands will relabel and start the MLS.
[mythcat@desk ~]$ setenforce 0
[mythcat@desk ~]$ getenforce
Permissive
...
[root@desk mythcat]# touch /.autorelabel
[root@desk mythcat]# reboot
If you have problems on boot the add selinux=0 on boot kernel.After I boot and relabel all files I got errors about Gtk-Messages.
I remove my old Cinnamon with this command:
[root@desk mythcat]# dnf groupremove -y "Cinnnamon"
I list all my group with dnf tool:
[root@desk mythcat]# dnf grouplist -v
I install the MATE environment:
dnf groupinstall -y "MATE Desktop" --allowerasing
After that the only way to start the environement is this command:
[mythcat@desk ~]$ sudo systemctl restart lightdm.service
Another issue comes from SELinux Alert Browser, where I get multiple alerts and these need to fix manually.First, these alerts are more than 250.
After I fix some of these now I see only 50.
I think this problem with changing the SELinux type can be improved.
Posted by
Cătălin George Feștilă
Labels:
2020,
Fedora,
Fedora 31,
linux,
linux tools,
selinux,
SELinux MLS,
tool,
tools,
tutorial,
tutorials
Fedora 31 : Using the dmesg command on Linux operating system.
The dmesg command is used to display the kernel-related messages on Unix like systems.
Today I will show you how to use this command on the Linux operating system.
Simply use the command:
[mythcat@desk ~]$ dmesg
[ 0.000000] microcode: microcode updated early to revision 0x21, date = 2019-02-13
...
Show the latest message that fits on screen:
[mythcat@desk ~]$ dmesg | less
...
Use it to see infoermation about motherboard:
[mythcat@desk ~]$ dmesg | grep -i memory
...
[mythcat@desk ~]$ dmesg | grep -i dma
...
[mythcat@desk ~]$ dmesg | grep -i usb
...
[mythcat@desk ~]$ dmesg | grep -i tty
...
Same reult with a single command using multiple grep option:
[mythcat@desk ~]$ dmesg | grep -E "memory|dma|usb|tty"
This display logs related to error and warning:
[root@desk mythcat]# dmesg --level=err,warn
The dmesg comes with supported log facilities:- kern - kernel messages;
- user - random user-level messages;
- mail - mail system;
- daemon - system daemons;
- auth - security/authorization messages;
- syslog - messages generated internally by syslogd;
- lpr - line printer subsystem;
- news - network news subsystem;
[mythcat@desk ~]$ dmesg --facility=daemon
Use root user to clear dmesg logs after the reading them:
[root@desk mythcat]# dmesg -C
If you want then you can show the outpout into the colored messages:
# dmesg -L
Tuesday, January 28, 2020
Fedora 31 : Can be better? part 004.
Another issue on Fedora can be linked to the management of transactions to avoid transaction lock.
Let's see how can be fixed:
[root@desk mythcat]# rpm --rebuilddb
warning: waiting for transaction lock on /var/lib/rpm/.rpm.lock
^C
[root@desk mythcat]# rm /var/lib/rpm/.rpm.lock
rm: remove regular empty file '/var/lib/rpm/.rpm.lock'? y
[root@desk mythcat]# rpm --rebuilddb
...
[root@desk mythcat]# dnf clean all
...
Waiting for process with pid 2128 to finish.
^CKeyboardInterrupt: Terminated.
[root@desk mythcat]# kill -9 2128
[root@desk mythcat]# dnf clean all
95 files removed
Posted by
Cătălin George Feștilă
Labels:
2020,
Fedora,
Fedora 31,
linux,
linux tools,
tool,
tools,
tutorial,
tutorials
Friday, January 24, 2020
Fedora 31 : The twa web auditor tool.
This tool comes with a good intro:
A tiny web auditor with strong opinions.
The tool named twa takes one domain at a time and use these dependencies: bash 4, curl, dig, jq, and nc, along with the POSIX system.
The project can be found at GitHub repository but I can be install easy on Fedora 31 distro:
TYPE(domain): explanation where TYPE is one of PASS, MEH, FAIL, UNK, SKIP, and FATAL., see the output example:
PASS: The test passed with flying color.
MEH: The test passed, but with one or more things that could be improved.
FAIL: The test failed and should be fixed.
UNK: The server gave us something we didn't understand.
SKIP: The server gave us something we understood, but that we don't handle yet.
FATAL: A really important test failed, and should be fixed immediately.
Another feature is scoring.
The score format is this: npasses nmehs nfailures nunknowns nskips totally_screwed.
Let's see one example:
The tool named twa takes one domain at a time and use these dependencies: bash 4, curl, dig, jq, and nc, along with the POSIX system.
The project can be found at GitHub repository but I can be install easy on Fedora 31 distro:
[root@desk mythcat]# dnf install twa.noarch
Last metadata expiration check: 0:06:08 ago on Fri 24 Jan 2020 01:57:53 PM EET.
Dependencies resolved.
================================================================================
Package Architecture Version Repository Size
================================================================================
Installing:
twa noarch 1.8.0-3.fc31 fedora 18 k
Transaction Summary
================================================================================
Install 1 Package
Total download size: 18 k
Installed size: 30 k
Is this ok [y/N]: y
Downloading Packages:
twa-1.8.0-3.fc31.noarch.rpm 10 kB/s | 18 kB 00:01
--------------------------------------------------------------------------------
Total 6.7 kB/s | 18 kB 00:02
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : twa-1.8.0-3.fc31.noarch 1/1
Running scriptlet: twa-1.8.0-3.fc31.noarch 1/1
Verifying : twa-1.8.0-3.fc31.noarch 1/1
Installed:
twa-1.8.0-3.fc31.noarch
Complete!
Let's see some examples with google website responses and this tool:
[mythcat@desk ~]$ twa google.com
FAIL(google.com): TWA-0102: HTTP redirects to HTTP (not secure)
FAIL(google.com): TWA-0205: Strict-Transport-Security missing
MEH(google.com): TWA-0206: X-Frame-Options is 'sameorigin', consider 'deny'
FAIL(google.com): TWA-0209: X-Content-Type-Options missing
FAIL(google.com): TWA-0210: X-XSS-Protection is '0'; XSS filtering disabled
FAIL(google.com): TWA-0214: Referrer-Policy missing
FAIL(google.com): TWA-0219: Content-Security-Policy missing
FAIL(google.com): TWA-0220: Feature-Policy missing
PASS(google.com): Site sends 'Server', but probably only a vendor ID: gws
PASS(google.com): Site doesn't send 'X-Powered-By'
PASS(google.com): Site doesn't send 'Via'
PASS(google.com): Site doesn't send 'X-AspNet-Version'
PASS(google.com): Site doesn't send 'X-AspNetMvc-Version'
PASS(google.com): No SCM repository at: http://google.com/.git/HEAD
PASS(google.com): No SCM repository at: http://google.com/.hg/store/00manifest.i
PASS(google.com): No SCM repository at: http://google.com/.svn/entries
PASS(google.com): No environment file at: http://google.com/.env
PASS(google.com): No environment file at: http://google.com/.dockerenv
PASS(google.com): No config file at: http://google.com/config.xml
PASS(google.com): No config file at: http://google.com/config.json
PASS(google.com): No config file at: http://google.com/config.yaml
PASS(google.com): No config file at: http://google.com/config.yml
PASS(google.com): No config file at: http://google.com/config.ini
^C
The output result line looks like this:TYPE(domain): explanation where TYPE is one of PASS, MEH, FAIL, UNK, SKIP, and FATAL., see the output example:
PASS: The test passed with flying color.
MEH: The test passed, but with one or more things that could be improved.
FAIL: The test failed and should be fixed.
UNK: The server gave us something we didn't understand.
SKIP: The server gave us something we understood, but that we don't handle yet.
FATAL: A really important test failed, and should be fixed immediately.
Another feature is scoring.
The score format is this: npasses nmehs nfailures nunknowns nskips totally_screwed.
Let's see one example:
[mythcat@desk ~]$ twa google.com | tscore
20 37 2 7 0 0 0
The tool can be used with Alpine Docker container.
Posted by
Cătălin George Feștilă
Labels:
2020,
Fedora,
Fedora 31,
internet security,
linux,
linux tools,
security,
tool,
tools,
tutorial,
tutorials,
twa
Tuesday, January 14, 2020
Fedora 31 : Install Yii framework.
Today I will show you how to install the Yii framework:
Yii is a fast, secure, and efficient PHP framework. Flexible yet pragmatic. Works right out of the box. Has reasonable defaults.
First, let's install the PHP , see the official webpage.
Fedora for PHP development.
Yii is a fast, secure, and efficient PHP framework. Flexible yet pragmatic. Works right out of the box. Has reasonable defaults.
First, let's install the PHP , see the official webpage.
Fedora for PHP development.
[mythcat@desk ~]$ sudo dnf install php-cli
...
Is this ok [y/N]: y
Downloading Packages:
(1/2): php-common-7.3.13-1.fc31.x86_64.rpm 794 kB/s | 760 kB 00:00
(2/2): php-cli-7.3.13-1.fc31.x86_64.rpm 2.2 MB/s | 2.8 MB 00:01
--------------------------------------------------------------------------------
Total 1.6 MB/s | 3.5 MB 00:02
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : php-common-7.3.13-1.fc31.x86_64 1/2
Installing : php-cli-7.3.13-1.fc31.x86_64 2/2
Running scriptlet: php-cli-7.3.13-1.fc31.x86_64 2/2
Verifying : php-cli-7.3.13-1.fc31.x86_64 1/2
Verifying : php-common-7.3.13-1.fc31.x86_64 2/2
Installed:
php-cli-7.3.13-1.fc31.x86_64 php-common-7.3.13-1.fc31.x86_64
Complete!
Install these packages: PHPUnit for unit tests or Composer.
[mythcat@desk ~]$ sudo dnf install phpunit composer
...
Complete!
Install mysqli extension:
[mythcat@desk ~]$ sudo dnf install php-mysqli
...
Installed:
php-mysqlnd-7.3.13-1.fc31.x86_64
Complete!
You can start the server:
[mythcat@desk ~]$ sudo php --server localhost:8080 --docroot .
PHP 7.3.13 Development Server started at Tue Jan 14 21:58:19 2020
Listening on http://localhost:8080
Document root is /home/mythcat
Press Ctrl-C to quit.
[Tue Jan 14 21:58:40 2020] [::1]:32988 [404]: / - No such file or directory
[Tue Jan 14 21:58:40 2020] [::1]:32990 [404]: / - No such file or directory
[Tue Jan 14 21:58:42 2020] [::1]:33014 [404]: /favicon.ico - No such file or directory
[Tue Jan 14 21:59:48 2020] [::1]:33080 [404]: / - No such file or directory
...
The composer command has these arguments:
[mythcat@desk ~]$ composer
______
/ ____/___ ____ ___ ____ ____ ________ _____
/ / / __ \/ __ `__ \/ __ \/ __ \/ ___/ _ \/ ___/
/ /___/ /_/ / / / / / / /_/ / /_/ (__ ) __/ /
\____/\____/_/ /_/ /_/ .___/\____/____/\___/_/
/_/
Composer version 1.9.1 2019-11-01 17:20:17
Usage:
command [options] [arguments]
Options:
-h, --help Display this help message
-q, --quiet Do not output any message
-V, --version Display this application version
--ansi Force ANSI output
--no-ansi Disable ANSI output
-n, --no-interaction Do not ask any interactive question
--profile Display timing and memory usage information
--no-plugins Whether to disable plugins.
-d, --working-dir=WORKING-DIR If specified, use the given directory as working directory.
--no-cache Prevent use of the cache
-v|vv|vvv, --verbose Increase the verbosity of messages: 1 for normal output,
2 for more verbose output and 3 for debug
Available commands:
about Shows the short information about Composer.
archive Creates an archive of this composer package.
browse Opens the package's repository URL or homepage in your browser.
check-platform-reqs Check that platform requirements are satisfied.
clear-cache Clears composer's internal package cache.
clearcache Clears composer's internal package cache.
config Sets config options.
create-project Creates new project from a package into given directory.
depends Shows which packages cause the given package to be installed.
diagnose Diagnoses the system to identify common errors.
dump-autoload Dumps the autoloader.
dumpautoload Dumps the autoloader.
exec Executes a vendored binary/script.
global Allows running commands in the global composer dir ($COMPOSER_HOME).
help Displays help for a command
home Opens the package's repository URL or homepage in your browser.
i Installs the project dependencies from the composer.lock file if present,
or falls back on the composer.json.
info Shows information about packages.
init Creates a basic composer.json file in current directory.
install Installs the project dependencies from the composer.lock file if present,
or falls back on the composer.json.
licenses Shows information about licenses of dependencies.
list Lists commands
outdated Shows a list of installed packages that have updates available, including
their latest version.
prohibits Shows which packages prevent the given package from being installed.
remove Removes a package from the require or require-dev.
require Adds required packages to your composer.json and installs them.
run Runs the scripts defined in composer.json.
run-script Runs the scripts defined in composer.json.
search Searches for packages.
show Shows information about packages.
status Shows a list of locally modified packages, for packages installed from source.
suggests Shows package suggestions.
u Upgrades your dependencies to the latest version according to composer.json,
and updates the composer.lock file.
update Upgrades your dependencies to the latest version according to composer.json,
and updates the composer.lock file.
upgrade Upgrades your dependencies to the latest version according to composer.json,
and updates the composer.lock file.
validate Validates a composer.json and composer.lock.
why Shows which packages cause the given package to be installed.
why-not Shows which packages prevent the given package from being installed.
Let's install the Yii framework:
[mythcat@desk ~]$ composer create-project --prefer-dist yiisoft/yii2-app-basic basic
Installing yiisoft/yii2-app-basic (2.0.31)
- Installing yiisoft/yii2-app-basic (2.0.31): Downloading (100%)
Created project in basic
Loading composer repositories with package information
Updating dependencies (including require-dev)
...
Writing lock file
Generating autoload files
> yii\composer\Installer::postCreateProject
chmod('runtime', 0777)...done.
chmod('web/assets', 0777)...done.
chmod('yii', 0755)...done.
> yii\composer\Installer::postInstall
Let's run it:
[mythcat@desk ~]$ cd basic/
[mythcat@desk basic]$ ./yii serve
Server started on http://localhost:8080/
Document root is "/home/mythcat/basic/web"
Quit the server with CTRL-C or COMMAND-C.
[Tue Jan 14 22:20:22 2020] [::1]:34072 [200]: /
[Tue Jan 14 22:20:22 2020] [::1]:34074 [200]: /assets/dd70c73/css/bootstrap.css
[Tue Jan 14 22:20:22 2020] [::1]:34076 [200]: /css/site.css
[Tue Jan 14 22:20:22 2020] [::1]:34078 [200]: /assets/afa8d426/jquery.js
[Tue Jan 14 22:20:22 2020] [::1]:34080 [200]: /assets/3235fb02/yii.js
[Tue Jan 14 22:20:22 2020] [::1]:34082 [200]: /assets/dd70c73/js/bootstrap.js
[Tue Jan 14 22:20:23 2020] [::1]:34084 [200]: /index.php?r=debug%2Fdefault%2Ftoolbar&tag=5e1e228626c18
Posted by
Cătălin George Feștilă
Labels:
2020,
Fedora,
Fedora 31,
linux,
linux tools,
php,
tutorial,
tutorials
Monday, January 6, 2020
Fedora 31 : Can be better? part 004.
The common question of any Fedora Linux user: Can be better?.
Yes, we can fix some common errors...
This is a common error generated by the GTK on Fedora distro applications:
Yes, we can fix some common errors...
This is a common error generated by the GTK on Fedora distro applications:
[mythcat@desk bin]$ ./studio.sh
(java:12631): Gtk-WARNING **: 11:45:47.061: Unable to locate theme engine in module_path: "murrine",
(java:12631): Gtk-WARNING **: 11:45:47.061: Unable to locate theme engine in module_path: "murrine",
(java:12631): Gtk-WARNING **: 11:45:47.106: Unable to locate theme engine in module_path: "murrine",
...
First, find the running GUI environment from the terminal:
[mythcat@desk ~]$ echo $XDG_CURRENT_DESKTOP
X-Cinnamon
This allows us to know that the issue may be a GTK theme package.[root@desk bin]# dnf install gtk-murrine-engine.x86_64
Last metadata expiration check: 0:45:00 ago on Mon 06 Jan 2020 11:14:27 AM EET.
Dependencies resolved.
...
Installed:
gtk-murrine-engine-0.98.2-17.fc31.x86_64
Complete!
Now the Android Studio works well without warning errors:
[mythcat@desk bin]$ ./studio.sh
Jan 06, 2020 12:00:51 PM java.util.prefs.FileSystemPreferences$1 run
INFO: Created user preferences directory.
...
Saturday, January 4, 2020
Fedora 31 : Install MongoDB on Fedora 31 distro.
Today I will show you how to install the MongoDB on Fedora 31 distro.
MongoDB is a general-purpose, document-based, distributed database built for modern application developers and for the cloud.
You can see the source code for MongoDb at the GitHub website.
First, you need to create a repository file.
You can see the source code for MongoDb at the GitHub website.
First, you need to create a repository file.
[mythcat@desk ~]$ su
Password:
[root@desk mythcat]# vi /etc/yum.repos.d/mongodb.repo
Add the code for this repository file.[mongodb-org-4.2]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/8Server/mongodb-org/testing/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-4.2.asc
Let's search this Fedora apckage with dnf tool
[root@desk mythcat]# dnf search mongodb-org
MongoDB Repository 5.8 kB/s | 6.5 kB 00:01
=========================== Name Exactly Matched: mongodb-org ============================
mongodb-org.x86_64 : MongoDB open source document-oriented database system (metapackage)
=============================== Name Matched: mongodb-org ================================
mongodb-org-shell.x86_64 : MongoDB shell client
mongodb-org-tools.x86_64 : MongoDB tools
mongodb-org-mongos.x86_64 : MongoDB sharded cluster query router
mongodb-org-server.x86_64 : MongoDB database server
[root@desk mythcat]# dnf install mongodb-org.x86_64
Last metadata expiration check: 0:01:46 ago on Fri 03 Jan 2020 05:27:49 PM EET.
Dependencies resolved.
==========================================================================================
Package Arch Version Repository Size
==========================================================================================
Installing:
mongodb-org x86_64 4.2.2-0.1.rc1.el8 mongodb-org-4.2 10 k
Installing dependencies:
mongodb-org-mongos x86_64 4.2.2-0.1.rc1.el8 mongodb-org-4.2 14 M
mongodb-org-server x86_64 4.2.2-0.1.rc1.el8 mongodb-org-4.2 25 M
mongodb-org-shell x86_64 4.2.2-0.1.rc1.el8 mongodb-org-4.2 17 M
mongodb-org-tools x86_64 4.2.2-0.1.rc1.el8 mongodb-org-4.2 47 M
Transaction Summary
==========================================================================================
Install 5 Packages
Total download size: 103 M
Installed size: 260 M
Is this ok [y/N]: y
...
From : https://www.mongodb.org/static/pgp/server-4.2.asc
Is this ok [y/N]: y
Key imported successfully
...
Installed:
mongodb-org-4.2.2-0.1.rc1.el8.x86_64 mongodb-org-mongos-4.2.2-0.1.rc1.el8.x86_64
mongodb-org-server-4.2.2-0.1.rc1.el8.x86_64 mongodb-org-shell-4.2.2-0.1.rc1.el8.x86_64
mongodb-org-tools-4.2.2-0.1.rc1.el8.x86_64
Complete!
Start and enable MongoDB service to start on boot.
[root@desk mythcat]# systemctl start mongod
[root@desk mythcat]# sudo systemctl enable mongod
[root@desk mythcat]# systemctl status mongod
● mongod.service - MongoDB Database Server
Loaded: loaded (/usr/lib/systemd/system/mongod.service; enabled; vendor preset: disabl>
Active: active (running) since Fri 2020-01-03 17:32:36 EET; 17s ago
Docs: https://docs.mongodb.org/manual
Main PID: 9019 (mongod)
Memory: 71.0M
CPU: 890ms
CGroup: /system.slice/mongod.service
└─9019 /usr/bin/mongod -f /etc/mongod.conf
Jan 03 17:32:34 desk systemd[1]: Starting MongoDB Database Server...
Jan 03 17:32:34 desk mongod[9017]: about to fork child process, waiting until server is r>
Jan 03 17:32:34 desk mongod[9017]: forked process: 9019
Jan 03 17:32:36 desk mongod[9017]: child process started successfully, parent exiting
Jan 03 17:32:36 desk systemd[1]: Started MongoDB Database Server.
Jan 03 17:32:47 desk systemd[1]: /usr/lib/systemd/system/mongod.service:16: PIDFile= refe>
...
Use the netstat utility to confirm that indeed Mongod service is listening.
[root@desk mythcat]# netstat -pnltu | grep mongo
tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 9019/mongod
Create an admin user with elevated privileges to perform elevated tasks.
[root@desk mythcat]# mongo
MongoDB shell version v4.2.2-rc1
...
> use admin
switched to db admin
> db.createUser(
... {
... user: "admin",
... pwd: "123",
... roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]
... }
... )
Successfully added user: {
"user" : "admin",
"roles" : [
{
"role" : "userAdminAnyDatabase",
"db" : "admin"
}
]
}
Show the users:
> show users
{
"_id" : "admin.admin",
"userId" : UUID("5ca3a1c2-6225-4158-b2bc-e32e5e5de58f"),
"user" : "admin",
"db" : "admin",
"roles" : [
{
"role" : "userAdminAnyDatabase",
"db" : "admin"
}
],
"mechanisms" : [
"SCRAM-SHA-1",
"SCRAM-SHA-256"
]
}
To enable authentication edit the /lib/systemd/system/mongod.service file, under the [Service] section, locate and edit the Environment parameter as shown.
[root@desk mythcat]# vim /lib/systemd/system/mongod.service
...
[Unit]
Description=MongoDB Database Server
Documentation=https://docs.mongodb.org/manual
After=network.target
[Service]
User=mongod
Group=mongod
Environment="OPTIONS= --auth -f /etc/mongod.conf"
...
Apply the changes to the service mongo unit.
[root@desk mythcat]# systemctl daemon-reload
[root@desk mythcat]# systemctl restart mongod
[root@desk mythcat]# systemctl status mongod
● mongod.service - MongoDB Database Server
Loaded: loaded (/usr/lib/systemd/system/mongod.service; enabled; vendor preset: disable>
Active: active (running) since Fri 2020-01-03 17:44:09 EET; 11s ago
Docs: https://docs.mongodb.org/manual
Process: 9272 ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb (code=exited, status=0/SUC>
Process: 9273 ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb (code=exited, s>
Process: 9274 ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb (code=exited, status=0/S>
Process: 9275 ExecStart=/usr/bin/mongod $OPTIONS (code=exited, status=0/SUCCESS)
Main PID: 9277 (mongod)
Memory: 168.3M
CPU: 1.423s
CGroup: /system.slice/mongod.service
└─9277 /usr/bin/mongod --auth -f /etc/mongod.conf
...
Posted by
Cătălin George Feștilă
Labels:
2020,
Fedora,
Fedora 31,
linux,
linux tools,
MongoDB,
tutorial,
tutorials
Friday, January 3, 2020
Fedora 31 : Test Google locally Apps Script CLI.
The Apps Script CLI, or clasp, is a tool that lets you create, edit, and deploy Apps Script projects locally like Sheets, Docs, Forms, and Slides.
Now you can create a new folder for your project named clasp_code.
Use this command and arrows key to select the type of the project:
You can clone an old project by script_ID.
Use this command into a new folder with the script_ID value from project menu File -> Project properties -> Info -> Script ID.
This will download the project in your current directory.
[mythcat@desk ~]$ mkdir google
[mythcat@desk ~]$ cd google
[mythcat@desk google]$ sudo dnf install nodejs
[sudo] password for mythcat:
Last metadata expiration check: 2:03:50 ago on Fri 03 Jan 2020 11:37:12 AM EET.
Dependencies resolved.
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
nodejs x86_64 1:12.13.1-1.fc31 updates 413 k
Installing dependencies:
nodejs-libs x86_64 1:12.13.1-1.fc31 updates 19 M
npm x86_64 1:6.12.1-1.12.13.1.1.fc31 updates 3.4 M
Installing weak dependencies:
nodejs-docs noarch 1:12.13.1-1.fc31 updates 2.4 M
Transaction Summary
================================================================================
Install 4 Packages
Total download size: 25 M
Installed size: 132 M
Is this ok [y/N]: y
...
Complete!
The clasp uses requires Node.js >= v6.0.0. Let's install it:
[mythcat@desk google]$ sudo npm install n -g
/usr/local/bin/n -> /usr/local/lib/node_modules/n/bin/n
+ n@6.1.3
added 1 package from 4 contributors in 0.705s
[mythcat@desk google]$ sudo n latest
installing : node-v13.5.0
mkdir : /usr/local/n/versions/node/13.5.0
fetch : https://nodejs.org/dist/v13.5.0/node-v13.5.0-linux-x64.tar.gz
installed : v13.5.0 (with npm 6.13.4)
Note: the node command changed location and the old location may be remembered in your
current shell.
old : /usr/bin/node
new : /usr/local/bin/node
To reset the command location hash either start a new shell, or execute PATH="$PATH"
[mythcat@desk google]$ sudo npm i @google/clasp -g
/usr/local/bin/clasp -> /usr/local/lib/node_modules/@google/clasp/src/index.js
npm WARN inquirer-autocomplete-prompt@1.0.1 requires a peer of inquirer@^5.0.0 ||
^6.0.0 but none is installed. You must install peer dependencies yourself.
+ @google/clasp@2.3.0
added 191 packages from 118 contributors in 53.457s
The simple run of clasp command shows us all arguments:
[mythcat@desk google]$ clasp
Usage: clasp [options]
clasp - The Apps Script CLI
Options:
-v, --version
-h, --help output usage information
Commands:
login [options] Log in to script.google.com
logout Log out
create [options] Create a script
clone [options] [scriptId] [versionNumber] Clone a project
pull [options] Fetch a remote project
push [options] Update the remote project
status [options] Lists files that will be pushed by clasp
open [options] [scriptId] Open a script
deployments List deployment ids of a script
deploy [options] Deploy a project
undeploy [options] [deploymentId] Undeploy a deployment of a project
version [description] Creates an immutable version of the script
versions List versions of a script
list List App Scripts projects
logs [options] Shows the StackDriver logs
run [options] [functionName] Run a function in your Apps Scripts project
apis [options] List, enable, or disable APIs
list
enable
disable
help Display help
setting|settings [settingKey] [newValue] Update in .clasp.json
* Any other command is not supported
You can log in with this command
[mythcat@desk google]$ clasp login
Logging in globally...
...
This will open a webpage for authentification and ends with this text message:
Logged in! You may close this page. Now you can create a new folder for your project named clasp_code.
Use this command and arrows key to select the type of the project:
[mythcat@desk clasp_code]$ clasp create --title "my first project with clasp";
? Create which script? (Use arrow keys)
❯ standalone
docs
sheets
slides
forms
webapp
api
...
User has not enabled the Apps Script API. Enable it by visiting
https://script.google.com/home/usersettings then retry.
If you enabled this API recently, wait a few minutes for the action to propagate
to our systems and retry.
Open the URL to activate the API and run the command again to get the JSON file named appsscript.json.You can clone an old project by script_ID.
Use this command into a new folder with the script_ID value from project menu File -> Project properties -> Info -> Script ID.
This will download the project in your current directory.
clasp clone script_ID
To edit your project use this command:
[mythcat@desk clasp_code]$ clasp open
The next step is to pull and push operations:
[mythcat@desk clasp_code]$ clasp pull
Warning: files in subfolder are not accounted for unless you set a '.claspignore' file.
Cloned 2 files.
└─ appsscript.json
└─ Code.js
[mythcat@desk clasp_code]$ clasp push
└─ Code.js
└─ appsscript.json
Pushed 2 files.
The clasp allows you to manage versions and deployments with these commands:
[mythcat@desk clasp_code]$ clasp version "First version"
Created version 1.
[mythcat@desk clasp_code]$ clasp deploy 1 "First deployment"
Created version 2.
For more information see the GitHub webpage.
Posted by
Cătălin George Feștilă
Labels:
2020,
clasp,
Fedora,
Fedora 31,
google,
Google Apps Script,
linux,
linux tools,
tutorial,
tutorials
Sunday, December 29, 2019
Fedora 31 : The VLC zoom effect!
Zoom, zoom ... zoom
This is not the only effect from the VLC application you can set more.
If you want to use the zoom effect when you play movies with VLC software then use these settings:
Tools -> Effects and Filters (Ctr +E) -> Video Effects -> Interactive Zoom
See the next images:
This is not the only effect from the VLC application you can set more.
If you want to use the zoom effect when you play movies with VLC software then use these settings:
Tools -> Effects and Filters (Ctr +E) -> Video Effects -> Interactive Zoom
See the next images:
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