You can use the sed command in Linux and Unix to delete matching words from a file. The sed command is a powerful stream editor that can perform various text transformations on a file. Here’s an example of how you can use sed to delete matching words from a file: $ sed ‘/word_to_delete/d’ input_file > … Read more

Yes, you can rename a directory in Linux using the command line interface (CLI). The simplest way to do this is to use the mv command. The mv command is used to move or rename files and directories in Linux. To rename a directory, simply specify the current name of the directory as the source … Read more

You can call a shell script function within an echo statement by first defining the function in your script and then calling it as part of the echo command. Here’s an example: #!/bin/bash function hello { echo “Hello, World!” } echo “The result of the function call is: $(hello)” In this example, the hello function … Read more

To find out your group name (also known as your group membership) in Linux, you can use the following command: $ groups This command will list all of the groups that you are a member of. For example, the output of the groups command might look something like this: myuser adm cdrom sudo dip plugdev … Read more

To find the version of MySQL installed on a Linux system using the command line, you can use the following command: $ mysql –version This command will display the version of MySQL that is currently installed on the system, along with some other information, such as the protocol version and the default socket. For example, … Read more

To find out the version of Nginx installed on your Linux system, you can use the following command: $ nginx -v or $ nginx -V The -v option will display only the version number of Nginx, while the -V option will display the version number and other information, such as the configure options used to … Read more

The tree command is a handy tool for visualizing the directory structure of a Linux file system. With tree, you can display the contents of a directory and all its subdirectories in a tree-like format. Here’s an example of how you can use the tree command: $ tree This will display the contents of the … Read more

To set a serial console in Debian Linux, you’ll need to make a few configuration changes to your system. Here’s an overview of the steps involved: Connect a serial cable between the Debian system and a serial terminal or another computer. Determine the name of the serial port. In Debian, serial ports are usually named … Read more

To find out if the NFS (Network File System) service is running on a Linux or Unix server, you can use the following methods: Check the service status with systemctl: $ systemctl status nfs If the NFS service is running, the output should show a Active: active (running) status. Check the NFS mount points with … Read more

In the bash shell, you can read a file line by line using a while loop and the read command. The read command reads a line of text from the standard input and splits it into fields, which can be assigned to variables. Here’s a simple example that reads a file line by line and … Read more