| -b--before | attach the separator before instead of after |
| -r--regex | interpret the separator as a regular expression |
| -s--separator | use STRING as the separator instead of newline |
| --help | display this help and exit |
| --version | output version information and exit |
NAME
tac - concatenate and print files in reverse
SYNOPSIS
tac [OPTION]... [FILE]...
DESCRIPTION
Write each FILE to standard output, last line first.
With no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short options too.
- -b, --before
attach the separator before instead of after
- -r, --regex
interpret the separator as a regular expression
- -s, --separator=STRING
use STRING as the separator instead of newline
- --help
display this help and exit
- --version
output version information and exit
AUTHOR
Written by Jay Lepreau and David MacKenzie.
REPORTING BUGS
GNU coreutils online help: <https://www.gnu.org/software/coreutils/> Report any translation bugs to <https://translationproject.org/team/>
SEE ALSO
cat(1), rev(1)
Full documentation <https://www.gnu.org/software/coreutils/tac> or available locally via: info '(coreutils) tac invocation'
Packaged by Debian (9.7-3) Copyright © 2025 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.