The “ssh connection refused port 22” error can be resolved by installing “OpenSSH” packages or checking the active status of SSH services or port numbers.

To fix No LSB modules are available, install the “lsb-core” package or if already installed, then try to remove it and then reinstall it.

To count the lines in a Linux file, different methods are used, like, wc (word count), grep, sed, awk, nl (number of lines), and perl commands.

In Linux, the .bashrc configuration file is executed when the user logs in. It can be used to create custom functions for various commands or operations.

The “rm” command can delete or remove files from the specified directory in Linux. It contains a lot of supported options mentioned in this guide.

Several commands are used as server monitoring tools, like; top, ps, vmstat, lsof, free, tcpdump, and netstat, which help us to monitor system performance.

In Linux, a program can be run using different methods, including GUI, terminal, Run command, and custom shortcut keys, as discussed in this article.

To resolve the “x11 Connection Rejected Because of Wrong Authentication” error, enable the x11 Forwarding or add correct authorization key to Xauthority file.

To disable the services of IPv6 on the Ubuntu Linux system, the “sysctl” utility, GRUB bootloader, and GUI methods are provided.

To know the 32 Bit or 64 Bit Linux system, use the commands “lscpu”, “uname -a”, “uname -m”, “arch”, and “getconf” commands in the terminal.

In the Firefox browser, you can enable the dark mode through the “Default Theme”, “General Settings”, and “Firefox Color” extensions.

In Linux, the super key is the system key which can be used with other keys as shortcut keys. Shortcut keys give the user quick access to specific tasks.

Threads provide an execution path within the process that can be found using the “lscpu” command in the terminal. Read this article for more details.

In Linux systems, SSH uses Port 22 that can visualize through the “getent” command, “systemctl” command, and “sshd_config” file

In Linux, hard links can access the original file’s output after deleting the original file, while soft or symbolic links don’t have this feature.

The “bash python command not found” error occurs when the python file cannot locate the system directory during execution.

The chown “operation not permitted” error can be removed using the sudo privileges “sudo chown or removing the immutable attribute.

The error “syntax error: unexpected end of file” occurs due to the syntax error like the closing bracket missing or the loop is started but not closed.

In Linux, files and directories can be searched using the find command. It provides different patterns to search the files or directories.

In Linux, the “du”, “ls”, “stat” and “ncdu” commands are used to check the size of a file from the terminal requiring the file name.

Using the psql prompt, the “\l” and “\dt” command list all current/existing databases and tables in PostgreSQL. Read this post to learn more.

In Linux, the “php –version” or the “php -i” commands are used to check the installed version of PHP. You can also search for specific PHP versions.

Three different methods are used to check if a file exists in bash, which are executed using the “test EXPRESSION”, [EXPRESSION], and [[EXPRESSION]] commands.

To analyze the disk usage in Linux, run the “df” command, and the “du” command in the terminal or use the disk usage analyzer application (GUI).

A docker is an open-source application managing platform where users can be added to the docker group using the “sudo usermod -aG docker user-name” command.

In Linux, gzip command is used to compress any file or directory using the terminal. Gzip command can also be applied to the folders

To fix this error, use the “sudo dpkg –configure -a” or “sudo apt remove ” in the terminal. Read this post to explore more solutions.

To list users in Linux, run the “cat /etc/passwd” command. Use “cat /etc/passwd | cut -d: -f1”, and “awk -F: ‘{ print $1}’ /etc/passwd” commands for user names.

To undo in Vim, the “u”, “:u”, or “:undo” commands and to redo the “:r” or “ctrl + r” commands are used in “Normal” mode.