tldr/pages/common/cat.md

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# cat
> Print and concatenate files.
> More information: <https://www.gnu.org/software/coreutils/cat>.
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- Print the contents of a file to `stdout`:
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`cat {{path/to/file}}`
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- Concatenate several files into an output file:
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`cat {{path/to/file1 path/to/file2 ...}} > {{path/to/output_file}}`
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- Append several files to an output file:
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`cat {{path/to/file1 path/to/file2 ...}} >> {{path/to/output_file}}`
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- Copy the contents of a file into an output file without buffering:
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`cat -u {{/dev/tty12}} > {{/dev/tty13}}`
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- Write `stdin` to a file:
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`cat - > {{path/to/file}}`