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Top Forums UNIX for Beginners Questions & Answers Match tab-delimited files based on key Post 303018253 by vgersh99 on Friday 1st of June 2018 09:31:53 AM
Old 06-01-2018
you might/will run out of the opened file descriptors.
Here's a slight variation on the theme:
Code:
awk '
FNR==NR         {f21[$1]=$3
                 f22[$2]=$3
                 next
                }
FNR==1        { if(fout) close(fout); fout=(FILENAME ".pruned") }
$1 in f21       { print $0, f21[$1] > fout; next }
$1 in f22       { print $0, f22[$1] > fout }
' FILE2.txt FILE1*.tab

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EXPAND(1)							   User Commands							 EXPAND(1)

NAME
expand - convert tabs to spaces SYNOPSIS
expand [OPTION]... [FILE]... DESCRIPTION
Convert tabs in each FILE to spaces, writing to standard output. With no FILE, or when FILE is -, read standard input. Mandatory arguments to long options are mandatory for short options too. -i, --initial do not convert tabs after non blanks -t, --tabs=N have tabs N characters apart, not 8 -t, --tabs=LIST use comma separated list of tab positions The last specified position can be prefixed with '/' to specify a tab size to use after the last explicitly specified tab stop. Also a prefix of '+' can be used to align remaining tab stops relative to the last speci- fied tab stop instead of the first column --help display this help and exit --version output version information and exit AUTHOR
Written by David MacKenzie. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report expand 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
unexpand(1) Full documentation at: <http://www.gnu.org/software/coreutils/expand> or available locally via: info '(coreutils) expand invocation' GNU coreutils 8.28 January 2018 EXPAND(1)
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