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---
syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
---
# cat
> Print and concatenate files.
> More information: <https://manned.org/cat.1posix>.
- Print the contents of a file to `stdout`:
`cat {{path/to/file}}`
- Concatenate several files into an output file:
`cat {{path/to/file1 path/to/file2 ...}} > {{path/to/output_file}}`
- Append several files to an output file:
`cat {{path/to/file1 path/to/file2 ...}} >> {{path/to/output_file}}`
- Copy the contents of a file into an output file without buffering:
`cat -u {{/dev/tty12}} > {{/dev/tty13}}`
- Write `stdin` to a file:
`cat - > {{path/to/file}}`