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Shell Programming and Scripting
Need to read a file in reverse
Post 100761 by zazzybob on Wednesday 1st of March 2006 10:30:08 PM
03-01-2006
Just for info: If you have GNU coreutils installed, you'll find the tac utility (reversed cat 
) does the job of reading a file from bottom to top. But this won't find your match and break out for you 
Cheers
ZB
) does the job of reading a file from bottom to top. But this won't find your match and break out for you Cheers
ZB
This User Gave Thanks to zazzybob For This Post:
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LEARN ABOUT XFREE86
tac
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 AUTHOR
Written by Jay Lepreau and David MacKenzie. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report tac translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 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) Full documentation at: <http://www.gnu.org/software/coreutils/tac> or available locally via: info '(coreutils) tac invocation' GNU coreutils 8.28 January 2018 TAC(1)