TAC

tac − concatenate and print files in reverse

tac [OPTION]... [FILE]...

Write each FILE to standard output, last line first. With no FILE, or when FILE is -, read standard input.

−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

Written by Jay Lepreau and David MacKenzie.

Report bugs to <bug-textutils@gnu.org>.

Copyright © 1999 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

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 tac

should give you access to the complete manual.