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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

GNU coreutils online help: <http://www.gnu.org/software/coreutils/>;
Report tac translation bugs to <http://translationproject.org/team/>;

COPYRIGHT

Copyright © 2016 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 '(coreutils) tac invocation'

COMMENTS