TAC(1)

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 tac translation bugs to <https://translationproject.org/team/>

COPYRIGHT
Copyright © 2017 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.

SEE ALSO
rev(1)

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