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tldr/pages/common/cat.md
Lena d427f333b2
pages/*: add backticks around I/O streams (#10436) 
* as suggested in #10428
* standard input  => `stdin`
* standard output => `stdout`
* standard error  => `stderr`

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
2023-08-09 10:59:02 +05:30

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cat

Print and concatenate files. More information: https://www.gnu.org/software/coreutils/cat.

  • 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}}