TAC
Section: User Commands (1)
Updated: December 2009
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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
Report tac bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
COPYRIGHT
Copyright © 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://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
The full documentation for
tac
is maintained as a Texinfo manual. If the
info
and
tac
programs are properly installed at your site, the command
-
info coreutils aqtac invocationaq
should give you access to the complete manual.