cat-(1) manual page



cat – concatenate files and print on the standard output


cat [OPTION] [FILE]…


Concatenate FILE(s), or standard input, to standard output.

-A, –show-all
equivalent to -vET
number nonempty output lines
equivalent to -vE
-E, –show-ends
display $ at end of each line
-n, –number
number all output lines
-s, –squeeze-blank
suppress repeated empty output lines
equivalent to -vT
-T, –show-tabs
display TAB characters as ^I
-v, –show-nonprinting
use ^ and M- notation, except for LFD and TAB
display this help and exit
output version information and exit

With no FILE, or when FILE is -, read standard input.


cat f – g
Output f’s contents, then standard input, then g’s contents.
Copy standard input to standard output.


Written by Torbjorn Granlund and Richard M. Stallman.

Reporting Bugs

Report bugs to <>.


Copyright © 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later < >
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

See Also

The full documentation for cat is maintained as a Texinfo manual. If the info and cat programs are properly installed at your site, the command

info cat

should give you access to the complete manual.