tac

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


       Copyright © 2013 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)

       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 'tac invocation'

       should give you access to the complete manual.