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How to display line numbers in vim using .vimrc file
You can display line numbers in Vim by adding the following line to your .vimrc file:rn rn rn set numberrn rn rnThe .vimrc file is a configuration file for Vim, and any settings specified in this file will be applied every time you start Vim. Once you have added the above line to your .vimrc file
Vi / Vim Quit Without Saving Command
To quit the Vim editor without saving changes, you can use the following command while in normal mode:rn rn rn : q !rn rn rnThe "!" forces the quit without saving any changes. If you have made changes to a file in Vim and you want to exit without saving those changes, simply type the above comman
Linux / Unix: pwdx Command Examples
The "pwdx" command in Linux/Unix is used to display the current working directory of a process. Here are some examples of using the "pwdx" command:rn rn Display the current working directory of a specific process: rn rn rn rn pwdx process- id rn rn rnReplace "process-id" with the actual process ID t
What Version Of Red Hat Enterprise Linux (RHEL) Am I Running?
To determine the version of Red Hat Enterprise Linux (RHEL) you are running, you can use the following command:rn rn rn cat /etc/redhat-releasern rn rnThis will display the version number of RHEL that is currently installed on your system. If you need more detailed information about your system, you
Ubuntu / Debian: Restart Named Service Command
To restart a named service on Ubuntu or Debian, you can use the following command:rn rn rn sudo systemctl restart service-name.servicern rn rnReplace "service-name" with the actual name of the service you want to restart. For example, to restart the Apache web server, you would run:rn rn rn sudo sys
Linux / Unix: users Command Examples
The "users" command in Linux/Unix is used to list the names of the users who are currently logged into the system. Here are some examples of using the "users" command:rn rn List all logged in users: rn rn rn rn users rn rn rn rn Display names of users in a specific format: rn rn rn rn users | tr ' '
Linux / Unix who Command Examples To List Users on The Systems
The "who" command in Linux/Unix is used to list the users who are currently logged into the system. Here are some examples of using the "who" command:rn rn List all users: rn rn rn rn who rn rn rn rn List users who are logged in to a specific terminal: rn rn rn rn who tty1rn rn rn rn List users with
Linux / Unix: w Command Examples
The "w" command in Linux/Unix displays information about the users who are currently logged into the system, and what they are doing. Here are some examples of using the "w" command:rn rn Display information about all users: rn rn rn rn wrn rn rn rn Display information about a specific user: rn rn r
Linux / Unix last Command Examples
The "last" command in Linux/Unix is used to display a list of recent login sessions on the system. Here are some examples of using the last command:rn rn Display a list of all login sessions: rn rn rn rn $ last rn rn rn rn Display a list of only the latest login session for each user: rn rn rn rn $
Linux / Unix: Display First Line of a File
In Linux/Unix, you can use the "head" command to display the first line of a file. The head command by default displays the first 10 lines of a file. To display only the first line, use the "-n 1" option:rn rn rn $ head -n 1 file.txt rn rn rnAlternatively, you can use the "sed" command to display th
Unix / Linux: Show First 10 or 20 Lines Of a File
In Linux/Unix, you can use the "head" command to display the first N lines of a file. By default, the head command displays the first 10 lines of a file. To display a different number of lines, use the "-n" option followed by the number of lines you want to see. For example, to display the first
Linux / Unix: lastcomm Command Examples
The "lastcomm" command in Linux/Unix displays information about previously executed commands on the system. It shows the name of the command, the time it was executed, the username, and other information. For example, to display a list of all previously executed commands, use the following comman
Linux: Display First Ten Lines (1-10) With Numbers Command
You can use the "head" command in the terminal to display the first n lines of a file in Linux. By default, the "head" command displays the first 10 lines of the file. For example, to display the first 10 lines of a file "filename" with line numbers, use the following command:rn rn rn $ cat -n fi
Linux Show All Members of a Group Command
You can use the "groups" or "id" command in the terminal to show all members of a group in Linux. For example, to display the members of a group "groupname", use the following command:rn rn rn $ getent group groupnamern rn rnOr, you can use the "id" command to display information about the group
Bash Shell Number Comparison
In the Bash shell, you can perform numerical comparisons to determine if one number is equal to, greater than, or less than another. You can use the following comparison operators for this purpose:rn rn -eq : Equal to rn -ne : Not equal to rn -lt : Less than rn -le : Less than or equal to rn -gt : G
Linux members Command Examples
The members command is used to display a list of the members of a group in a Linux or Unix-like system. The members command takes the name of a group as its argument and outputs the names of the users that belong to the group. Here are some common examples of using the members command:rn rn To di
Linux lid (libuser-lid) Command Examples
The lid (libuser-lid) command is a utility used to manage user accounts and user groups on Linux systems. The lid command is part of the libuser library, which provides a standardized interface for manipulating and administering user and group accounts on various Linux distributions. Here are som
Linux Update All Packages Command Using the CLI
The process of updating all packages on a Linux system depends on the package manager used by the distribution. Here are some common package managers and the command to update all packages using the command line interface (CLI) for each:rn rn Debian-based systems (such as Ubuntu, Linux Mint, etc.) u
Gentoo Linux: Update All Installed Packages Command
In Gentoo Linux, you can update all installed packages using the emerge command. Here's the basic syntax:rn rn rn emerge --update --deep --newuse worldrn rn rnThis command will update all installed packages, including their dependencies, to the latest available version. The options used are:rn rn --
Linux/Unix: Cat Command Display Line Numbers
You can display line numbers with the cat command by using the nl (number lines) command. Here's an example:rn rn rn nl rn rn rnWhere is the name of the file you want to display with line numbers. The nl command will print the contents of the file, with each line numbered. If you want to display
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