TAC(1)                                    User Commands                                    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

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

AUTHOR
       Written by Jay Lepreau and David MacKenzie.

COPYRIGHT
       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.



GNU coreutils 8.22                         October 2018                                    TAC(1)