1TAC(1)                           User Commands                          TAC(1)
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NAME

6       tac - concatenate and print files in reverse
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SYNOPSIS

9       tac [OPTION]... [FILE]...
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DESCRIPTION

12       Write  each FILE to standard output, last line first.  With no FILE, or
13       when FILE is -, read standard input.
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15       Mandatory arguments to long options are  mandatory  for  short  options
16       too.
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18       -b, --before
19              attach the separator before instead of after
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21       -r, --regex
22              interpret the separator as a regular expression
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24       -s, --separator=STRING
25              use STRING as the separator instead of newline
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27       --help display this help and exit
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29       --version
30              output version information and exit
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AUTHOR

33       Written by Jay Lepreau and David MacKenzie.
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REPORTING BUGS

36       Report tac bugs to bug-coreutils@gnu.org
37       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
38       General help using GNU software: <http://www.gnu.org/gethelp/>
39       Report tac translation bugs to <http://translationproject.org/team/>
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42       Copyright  ©  2010  Free Software Foundation, Inc.  License GPLv3+: GNU
43       GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
44       This is free software: you are free  to  change  and  redistribute  it.
45       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

48       The  full  documentation for tac is maintained as a Texinfo manual.  If
49       the info and tac programs are properly installed at your site, the com‐
50       mand
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52              info coreutils 'tac invocation'
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54       should give you access to the complete manual.
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58GNU coreutils 8.4                  June 2018                            TAC(1)
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