1TAC(1) User Commands TAC(1)
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6 tac - concatenate and print files in reverse
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9 tac [OPTION]... [FILE]...
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12 Write each FILE to standard output, last line first.
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14 With no FILE, or when FILE is -, read standard input.
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16 Mandatory arguments to long options are mandatory for short options
17 too.
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19 -b, --before
20 attach the separator before instead of after
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22 -r, --regex
23 interpret the separator as a regular expression
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25 -s, --separator=STRING
26 use STRING as the separator instead of newline
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28 --help display this help and exit
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30 --version
31 output version information and exit
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34 Written by Jay Lepreau and David MacKenzie.
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37 GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
38 Report any translation bugs to <https://translationproject.org/team/>
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41 Copyright © 2021 Free Software Foundation, Inc. License GPLv3+: GNU
42 GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
43 This is free software: you are free to change and redistribute it.
44 There is NO WARRANTY, to the extent permitted by law.
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47 cat(1), rev(1)
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49 Full documentation <https://www.gnu.org/software/coreutils/tac>
50 or available locally via: info '(coreutils) tac invocation'
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54GNU coreutils 9.0 March 2022 TAC(1)