## 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: <http://www.gnu.org/software/coreutils/>
Report tac translation bugs to <http://translationproject.org/team/>

## COPYRIGHT

Copyright © 2014 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

rev(1)

Full documentation at: <http://www.gnu.org/software/coreutils/tac>
or available locally via: info (aq(coreutils) tac invocation(aq