cat
concatenate and print files
TLDR
Print the contents of a file to the standard output
Concatenate several files into an output file
Append several files to an output file
Copy the contents of a file into an output file without buffering
Write stdin to a file
SYNOPSIS
cat [OPTION]... [FILE]...
DESCRIPTION
Concatenate FILE(s) to standard output.
With no FILE, or when FILE is -, read standard input.
- -A, --show-all
-
equivalent to -vET
- -b, --number-nonblank
-
number nonempty output lines, overrides -n
- -e
-
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
- -t
-
equivalent to -vT
- -T, --show-tabs
-
display TAB characters as ^I
- -u
-
(ignored)
- -v, --show-nonprinting
-
use ^ and M- notation, except for LFD and TAB
- --help
-
display this help and exit
- --version
-
output version information and exit
EXAMPLES
- cat f - g
-
Output f's contents, then standard input, then g's contents.
- cat
-
Copy standard input to standard output.
REPORTING BUGS
GNU coreutils online help:
<https://www.gnu.org/software/coreutils/>
Report any translation bugs to
<https://translationproject.org/team/>
COPYRIGHT
Copyright © 2022 Free Software Foundation, Inc. License GPLv3+: GNU
GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There
is NO WARRANTY, to the extent permitted by law.
SEE ALSO
tac(1) Full documentation <https://www.gnu.org/software/coreutils/cat> or available locally via: info '(coreutils) cat invocation'
AUTHOR
Written by Torbjorn Granlund and Richard M. Stallman.