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* as suggested in #10428 * standard input => `stdin` * standard output => `stdout` * standard error => `stderr` Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
32 lines
753 B
Markdown
32 lines
753 B
Markdown
# cat
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> Print and concatenate files.
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> More information: <https://keith.github.io/xcode-man-pages/cat.1.html>.
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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}}`
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- Number all output lines:
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`cat -n {{path/to/file}}`
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- Display non-printable and whitespace characters (with `M-` prefix if non-ASCII):
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`cat -v -t -e {{path/to/file}}`
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