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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 per‐
       mitted 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                                  November 2016                                              TAC(1)