Entries

How to install Flameshot in Linux Mint? [with screenshots]

Flameshot is very powerful and easy-to-use screenshot manager for every linux distro. Embedded screenshot managers are very small and fast programs, but offer very limited functionality. If you want to install Flameshot in Linux Mint, just run following command in Linux Mint terminal:

$ sudo apt-get install flameshot

output:

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Written by Administrator on Friday May 1, 2020

How to find your IP address in Linux Mint?

The simplest and the fastes way to find your IP address in Linux Mint is to run the following command in linux terminal:

$ hostname -I

But this is an example, how to find your IP address in internal network. In case you are looking for an external IP address (the address you have in internet), you should run a command:

$ curl ifconfig.me

or

$ curl ident.me

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Written by Administrator on Friday May 1, 2020

How to install japanese keyboard layout on Elementary OS

In order to install japanese language keyboard layout in Elementary OS, use fcitx, but during installation choose "japanese language" instead of "chinese language". Keep in mind, that under Freya, nor ibus, nor SCIM is working properly.

First, you have to add fcitx repository:

$ sudo add-apt-repository ppa:fcitx-team/nightly

Then update your sources:

$ sudo apt-get update

After that you can install fcitx and chinese input layout:

$ sudo apt-get install fcitx fcitx-config-gtk fcitx-sunpinyin fcitx-module-cloudpinyin fcitx-chewing fcitx-table-all

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Written by Administrator on Thursday April 30, 2020

How to delay shutdown in Devuan Linux?

Shutdown delay in Devuan Linux is made the same way as shutdown delay in other Linux distros. The only thing you have to do is to run "shutdown" comman with proper parameters. This is very easy. For example this command will delay system shutdown for 20 minutes:

$ shutdown +20

In case you want to delay shutdown for 2 hours, you run:

$ shutdown +120

This is simple thing: just set a number of minutes.

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Written by Administrator on Thursday April 30, 2020

How to plan system shutdown in Devuan linux?

You already know, that to shut down system immediately, you can run a following command in linux terminal:

$ shutdown now

System will shutdown immediately. Surely, it you want to shutdown and then reboot it, you will run:

$ shutdown -r now

But sometimes you have to plan your shutdown (corporate rules, system maintenance, parental control etc). In this case you have just to pospone system shutdown using proper parameters while running "shutdown" command.

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Written by Administrator on Thursday April 30, 2020

How to prevent users log in into the Devuan system and how to postpone system shutdown?

Sometimes you need to lock system and don't let users to log in. One of the solutions is to schedule system shutdown and postpone it with a lock from new logins. It can happen in case you want to upgrade the system, but it's impossible to kick logged users from the system and you want just to let them finish their work and then do you work.

Just imagine you need to postpone shutdown for 20 minutes and let users know that system maintenance is coming. Let's start postponed shutdown with an announcement, what is going to happen:

$ shutdown +20 "System upgrade is coming. Thank you for your patience"

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Written by Administrator on Thursday April 30, 2020

Explanation of inittab in Devuan

As you know, Devuan is using a little bit different init system (sysvinit), than majority of linux distributions (systemd). It means, that you have a chance to follow system's startup and shutdown processes in detail. Moreover, sysvinit gives you a chance to adjust, modify and configure the way, how processes get started.

First process created in system has PID=1 and runs as a daemon. PID number 1 controls system's startup, shutdown and every changes happening with other proceses.

What is inittab

Let's see, how you Devuan system starts: Bootloader starts kernel, which spawns init, which parses inittab, which starts a service symlinks in the boot runlevel and then in the default operating runlevel.

Inittab is just a file, which describes and sets, which processes start in which runlevel. Let's see on a real example and explain, what means what.

To view an inittab, run a command:

$ cat /etc/inittab

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Written by Administrator on Thursday April 30, 2020

How to create a file of a certain size in Linux using terminal (bash)

Sometimes we need to create files (actually generate them) for testing purposes or for checking our scripts or programs, working with file size limits. In linux you don't have program any script; bash is good enough to meet your requirements to achieve your goal. I will show you, how to generate files of any size you need in my Solus system (don't be afraid, all examples are working on every GNU/Linux based systems and distributions);

Creating a file of an approximate size

This is the fastest way to generate a file using truncate command:

$ truncate -s 2M edustorage.txt

We aimed to 2M big filesize, but let's see, what is precize filesize of this generated one:

dima@edustorage ~/test/yobany $ ls -l
total 0
-rw-rw-r-- 1 dima dima 2097152 Apr 28 11:55 edustorage.txt

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Written by Administrator on Tuesday April 28, 2020

How to install Apache2 server on Linux Lite OS?

If you plan to install one of the most popular server on your system (Apache2), you should start with running a command:

$ sudo apt-get install apache2

output:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  fonts-hosny-amiri fonts-sil-scheherazade linux-headers-4.15.0-88
  linux-headers-4.15.0-88-generic linux-image-4.15.0-88-generic
  linux-modules-4.15.0-88-generic linux-modules-extra-4.15.0-88-generic
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  apache2-bin apache2-data apache2-utils libapr1 libaprutil1
  libaprutil1-dbd-sqlite3 libaprutil1-ldap
Suggested packages:
  apache2-doc apache2-suexec-pristine | apache2-suexec-custom
The following NEW packages will be installed:
  apache2 apache2-bin apache2-data apache2-utils libapr1 libaprutil1
  libaprutil1-dbd-sqlite3 libaprutil1-ldap
0 upgraded, 8 newly installed, 0 to remove and 20 not upgraded.
Need to get 1,604 kB of archives.
After this operation, 6,497 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 libapr1 amd64 1.6.3-2 [90.9 kB]
Get:2 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 libaprutil1 amd64 1.6.1-2 [84.4 kB]
Get:3 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 libaprutil1-dbd-sqlite3 amd64 1.6.1-2 [10.6 kB]
Get:4 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 libaprutil1-ldap amd64 1.6.1-2 [8,764 B]
Get:5 http://us.archive.ubuntu.com/ubuntu bionic-security/main amd64 apache2-bin amd64 2.4.29-1ubuntu4.13 [1,070 kB]
Get:6 http://us.archive.ubuntu.com/ubuntu bionic-security/main amd64 apache2-utils amd64 2.4.29-1ubuntu4.13 [83.8 kB]
Get:7 http://us.archive.ubuntu.com/ubuntu bionic-security/main amd64 apache2-data all 2.4.29-1ubuntu4.13 [160 kB]
Get:8 http://us.archive.ubuntu.com/ubuntu bionic-security/main amd64 apache2 amd64 2.4.29-1ubuntu4.13 [95.1 kB]
Fetched 1,604 kB in 16s (101 kB/s)                                             
Selecting previously unselected package libapr1:amd64.
(Reading database ... 355358 files and directories currently installed.)
Preparing to unpack .../0-libapr1_1.6.3-2_amd64.deb ...
Unpacking libapr1:amd64 (1.6.3-2) ...
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Unpacking libaprutil1-dbd-sqlite3:amd64 (1.6.1-2) ...
Selecting previously unselected package libaprutil1-ldap:amd64.
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Unpacking libaprutil1-ldap:amd64 (1.6.1-2) ...
Selecting previously unselected package apache2-bin.
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Selecting previously unselected package apache2.
Preparing to unpack .../7-apache2_2.4.29-1ubuntu4.13_amd64.deb ...
Unpacking apache2 (2.4.29-1ubuntu4.13) ...
Setting up libapr1:amd64 (1.6.3-2) ...
Setting up apache2-data (2.4.29-1ubuntu4.13) ...
Setting up libaprutil1:amd64 (1.6.1-2) ...
Setting up libaprutil1-ldap:amd64 (1.6.1-2) ...
Setting up libaprutil1-dbd-sqlite3:amd64 (1.6.1-2) ...
Setting up apache2-utils (2.4.29-1ubuntu4.13) ...
Setting up apache2-bin (2.4.29-1ubuntu4.13) ...
Setting up apache2 (2.4.29-1ubuntu4.13) ...
Enabling module mpm_event.
Enabling module authz_core.
Enabling module authz_host.
Enabling module authn_core.
Enabling module auth_basic.
Enabling module access_compat.
Enabling module authn_file.
Enabling module authz_user.
Enabling module alias.
Enabling module dir.
Enabling module autoindex.
Enabling module env.
Enabling module mime.
Enabling module negotiation.
Enabling module setenvif.
Enabling module filter.
Enabling module deflate.
Enabling module status.
Enabling module reqtimeout.
Enabling conf charset.
Enabling conf localized-error-pages.
Enabling conf other-vhosts-access-log.
Enabling conf security.
Enabling conf serve-cgi-bin.
Enabling site 000-default.
Created symlink /etc/systemd/system/multi-user.target.wants/apache2.service → /lib/systemd/system/apache2.service.
Created symlink /etc/systemd/system/multi-user.target.wants/apache-htcacheclean.service → /lib/systemd/system/apache-htcacheclean.service.
insserv: warning: current start runlevel(s) (empty) of script `apache-htcacheclean' overrides LSB defaults (2 3 4 5).
insserv: warning: current stop runlevel(s) (0 1 2 3 4 5 6) of script `apache-htcacheclean' overrides LSB defaults (0 1 6).
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Processing triggers for systemd (237-3ubuntu10.39) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Processing triggers for ufw (0.36-0ubuntu0.18.04.1) ...
Processing triggers for ureadahead (0.100.0-21) ...
ureadahead will be reprofiled on next reboot

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Written by Administrator on Monday April 27, 2020