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Top Forums Shell Programming and Scripting Compare 2 text file with 1 column in each file and write mismatch data to 3rd file Post 302868561 by paresh n doshi on Monday 28th of October 2013 08:36:03 AM
Old 10-28-2013
CAN YOU PLEASE EXPLAIN WHAT {A[$1]++" EXACTLY " DOES? IT IS CREATING AN ARRAY BUT NOT ASSIGNING ANYTHING. FURTHER INCREMENT SIGN IS NOT UNDERSTOOD BY ME. PLEASE HELP ME UNDERSTAND THIS.

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SEQ(1)								   User Commands							    SEQ(1)

NAME
seq - print a sequence of numbers SYNOPSIS
seq [OPTION]... LAST seq [OPTION]... FIRST LAST seq [OPTION]... FIRST INCREMENT LAST DESCRIPTION
Print numbers from FIRST to LAST, in steps of INCREMENT. Mandatory arguments to long options are mandatory for short options too. -f, --format=FORMAT use printf style floating-point FORMAT -s, --separator=STRING use STRING to separate numbers (default: ) -w, --equal-width equalize width by padding with leading zeroes --help display this help and exit --version output version information and exit If FIRST or INCREMENT is omitted, it defaults to 1. That is, an omitted INCREMENT defaults to 1 even when LAST is smaller than FIRST. The sequence of numbers ends when the sum of the current number and INCREMENT would become greater than LAST. FIRST, INCREMENT, and LAST are interpreted as floating point values. INCREMENT is usually positive if FIRST is smaller than LAST, and INCREMENT is usually negative if FIRST is greater than LAST. FORMAT must be suitable for printing one argument of type 'double'; it defaults to %.PRECf if FIRST, INCRE- MENT, and LAST are all fixed point decimal numbers with maximum precision PREC, and to %g otherwise. GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report seq translation bugs to <http://translationproject.org/team/> AUTHOR
Written by Ulrich Drepper. COPYRIGHT
Copyright (C) 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 permitted by law. SEE ALSO
The full documentation for seq is maintained as a Texinfo manual. If the info and seq programs are properly installed at your site, the command info coreutils 'seq invocation' should give you access to the complete manual. GNU coreutils 8.22 June 2014 SEQ(1)
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