This will create a file test4 and the output of the cat command is piped to sort and the result will be redirected to a newly created file. Sorting Contents of Multiple Files in a Single File When you use the redirect with standard input ‘ test3 13. Redirecting Standard Input with Redirection Operator Here, the contents of the test file will be appended at the end of the test1 file. Appending Standard Output with Redirection OperatorĪppends in existing file with ‘ >‘ (double greater than) symbol. Careful, existing contents of the test1 will be overwritten by the contents of the test file. We can redirect the standard output of a file into a new file else existing file with a ‘ >‘ (greater than) symbol. Use Standard Output with Redirection Operator We need to separate each file with (semicolon). In the below example we have three files test, test1, and test2, and able to view the contents of those files as shown above. In the below output, we could see TAB space is filled up with the ‘ ^I‘ characters. This option is useful to squeeze multiple lines into a single line. In the below, you can see with the -e option that ‘ $‘ is shows at the end of the line and also in space showing ‘ $‘ if there is any gap between paragraphs. # cat -n song.txtġ2 There's No Hurt Or Sorrow 6. With the -n option you could see the line numbers of a file song.txt in the output terminal.
# cat song.txt | more # cat song.txt | less 5. If a file having a large number of content that won’t fit in the output terminal and the screen scrolls up very fast, we can use parameters more and less with the cat command as shown below. You can see the content of the file with the following cat command. The text will be written in the test2 file. # cat >test2Īwaits input from the user, type desired text, and press CTRL+D (hold down Ctrl key and type ‘ d‘) to exit.
We will create a file called test2 file with the below command. In below example, it will display the contents of the test and test1 file in the terminal. View Contents of Multiple Files in terminal The below example will show the contents of /etc/passwd file.
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Read Also: Learn How to use ‘cat’ and ‘tac’ (Reverse of cat Command) in Linux General Syntax of Cat Command $ cat. In this article, we are going to find out the handy use of cat commands with their examples in Linux. cat command allows us to create single or multiple files, view content of a file, concatenate files and redirect output in terminal or files. The cat (short for “ concatenate“) command is one of the most frequently used commands in Linux/Unix-like operating systems.
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