Linux cat Command with 12 Practical Examples
Linux cat command is an awesome command to see the content of a file. This command is mainly used to display the content of one or multiple files. Click here If you are interested in learning the Top 25 Linux commands. In this article, we will discuss Linux cat Command with 12 Practical Examples.
(1) Basic Usage: display content of a file
This is the most basic example of using the cat command. Just type cat with the file name and you can see all content of the file on the terminal screen.
(2) Display multiple files in a single terminal
If you don't have time, you can see multiple files at once. Just type cat command with different files and all the files will be open on the terminal screen. This example makes this command unique as it is a little difficult to do the same tasks with other commands.
cat <file1> <file2>
(3) Display usage of cat command
You can see different options available with commands by using the
--help option. This displays all available options on the terminal screen.
(4) Mention line number in each line of file
Sometimes you want to mention the line number in front of each line. If you use the -n option, you can display the content of the file with the line number.
cat -n <path-of-file>
(5) Create a file using cat command
If you want to create a quick file and enter some content, use greater than operator following by file name.
cat > <file-name>
You can use (Ctrl + d) or (Ctrl + c) to exit and save files.
(6) Enter $ in each line of the file
cat -e <path-of-file>
(7) Creating one file by combining two or more files
By using this example, you can combine multiple files into one file.
cat <file1> <file2> <file3> <file4> > <file>
(8) Appending content of the file in existing file
cat <file1> >> <file2>
(9) Identify the version of the cat command
This example just displays the version of cat command.
(10) Enter line numbers in each line leaving a blank line
This command gives line numbers only to that line where content is available.
cat -b <path-of-file>
(11) Display lines of a file in reverse order
This is a fun example where the user reverses the line order by using tac command.
(12) Display content of all files in the current directory
By using the * with cat command, you can display all content of files of the current directory on the terminal screen.
Linux cat command is a useful command and should be known by every Linux user. In this article, we have covered the Linux cat command with 12 examples that will help you understand this command's usage.
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Disclaimer: This tutorial is for educational purpose only. Individual is solely responsible for any illegal act.