04-26-2017
In the end, I did this based on the code posted by Scrutinizer,
error_record=$(awk '{getline s<f} $0!=s{print; exit}' f=file2 file1)
It seems like it will work well enough and was the fastest of the methods that worked.
This suggestion of RudiC also worked but was marginally slower.
error_record=$(diff -y -b --suppress-common-lines file1 file2 | cut -f1 | head -1)
By slower I mean 0m0.391s as opposed to 0m0.156s with the first method. Not enough difference to bother with but I guess you need some reason to pick a method.
The method suggested by rdrtx1 also worked but again was a bit slower,
error_record=$(paste -d" " file1 file2 | awk '$1 != $2 {print $1; exit;}')
My guess is that the two slower methods both made calls to more than one program and this is the origin of the difference.
I was not able to get any output from this, even though it looks correct,
awk ' NR==FNR { a[NR]=$0; next } $0 != a[FNR] { print a[FNR]; exit }' file1 file2
Don't know what the issue is there.
LMHmedchem
Last edited by LMHmedchem; 04-26-2017 at 10:15 PM..
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LEARN ABOUT OPENSOLARIS
gslp
GSLP(1) Ghostscript GSLP(1)
NAME
gslp - Format and print text using ghostscript
gsbj - Format and print text for BubbleJet printer using ghostscript
gsdj - Format and print text for DeskJet printer using ghostscript
gsdj500 - Format and print text for DeskJet 500 BubbleJet using ghostscript
gslj - Format and print text for LaserJet printer using ghostscript
SYNOPSIS
gslp -12BclqRr -b<header> -f<font> -F<hfont> -L<lines> -p<outfile> -T<n> --add-to-space <units> --add-to-width <units> --columns <n>
--detect --first-page <n> --kern <file.afm> --last-page <n> --(heading|footing)-(left|center|right) <string> --margin-(top|bot-
tom|left|right) <inches> --no-eject-(file|formfeed) --spacing <n> [gs options] [files]
gsbj [options] [files]
gsdj [options] [files]
gsdj500 [options] [files]
gslj [options] [files]
DESCRIPTION
This utility provides functionality approximately equivalent to the Unix enscript(1) program. It prints plain text files using a single
font. It currently handles tabs and formfeeds, but not backspaces. It will line-wrap when using fixed-pitch fonts. It will also do kern-
ing and width adjustment.
The default device (-sDEVICE=) and resolution (-r) are as follows:
gslp epson 180
gsbj bj10e 180
gsdj deskjet 300
gsdj500 djet500 300
gslj laserjet 300
By default the current date is formatted as the center header.
OPTIONS
Standard switches implemented:
-12BclqRr -b<header> -f<font> -F<hfont> -L<lines> -p<outfile>
Sun switches implemented:
-T<n> set tab width
Switches ignored:
-GghKkmow -# -C -d -J -n -P -S -s -t -v
Switches added:
--add-to-space <units>
add the given number of 1/72" units to the width of each space (may be negative)
--add-to-width <units>
add the given number of 1/72" units to the width of each character (may be negative)
--columns <n>
print in <n> columns
--detect
treat the file as PostScript if it starts with %!
--first-page <n>
start printing at page <n>
--kern <file.afm>
kern using information from the given .AFM file
--last-page <n>
stop printing after page <n>
--(heading|footing)-(left|center|right) <string>
set the heading/footing fields; use -B first to clear
--margin-(top|bottom|left|right) <inches>
set a margin
--no-eject-(file|formfeed)
end-of-file/FF only starts a new column, not a new sheet
--spacing <n>
use double (n=2), triple (n=3), etc. spacing
Also, the string %# in a heading or footing is replaced with the page #.
SEE ALSO
gs(1)
VERSION
This document was last revised for Ghostscript version 8.63.
AUTHOR
Artifex Software, Inc. are the primary maintainers of Ghostscript. This manpage by George Ferguson.
8.63 1 August 2008 GSLP(1)