tee Command in Linux

What does the tee Command do in Linux?

The tee Command Standard Input (stdin) is reading, and it is standard output, one or more files. Tea is usually part of a pipeline, and how many commands can follow and precede it.

The tee command reads the standard input and reads one or more files for the standard output. The command is named T-splitter used in plumbing. It breaks the production of a program so that it can be displayed and protected in a file. It works at once, the two tasks and copies the specified files or variables or results.

There are a few options as below:

  1. –a option: Suppose we have the file 1. txt. Do not restrict the file, but add to the given file.
  2. –help option: It displays the help message and exit.
  3. –version option: It displays the version information and exit.

The tee command can be used to:

  • Append to the given file: The default behaviour of the file is overwriting the file’s content. To add the command output to the end of the file, use the argument -a (or --append).
  • Write to multiple files: The numerous files can be written using the tee command followed by any number of files to write the same output.
  • Hide the output: It tells the tee command to store the command output in a file and skip the terminal output.
  • Redirect output of one command to another: The tee does not have to be the last command in the pipeline, so it can be used to forward the output to another command.
  • Ignore interrupts: To enable tee to exit correctly, add the argument –i(or –ignore-interrupts) even after the previous command has been interrupted.
  • Using tee with sudo: Place the sudo command right before the tee command to enable tee to write to a root-owned file or file belonging to another user.