tldr/pages/common/cat.md

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# cat
> Print and concatenate files.
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/cat-invocation.html>.
- Print the contents of a file to the standard output:
`cat {{file}}`
- Concatenate several files into the target file:
`cat {{file1}} {{file2}} > {{target_file}}`
- Append several files into the target file:
`cat {{file1}} {{file2}} >> {{target_file}}`
- Number all output lines:
`cat -n {{file}}`
- Display non-printable and whitespace characters (with `M-` prefix if non-ASCII):
`cat -v -t -e {{file}}`