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..
This User Gave Thanks to LMHmedchem For This Post:
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LEARN ABOUT DEBIAN
pclock
PCLOCK(1) General Commands Manual PCLOCK(1)
NAME
pclock - pixmap clock
SYNOPSIS
pclock [options]
DESCRIPTION
This manual page documents briefly the pclock command. This manual page was written for the Debian GNU/Linux distribution because the
original program does not have a manual page.
pclock is a program that places a small analog clock program on the desktop of X. It was designed to run under the WindowMaker window man-
ager. It uses any 64x64 pixmap as a background.
OPTIONS
The programs follow the usual GNU command line syntax, with long options starting with two dashes (`-') and short optoins starting with one
dash. A summary of options is included below.
-B PIXMAP, --background=PIXMAP
Use the given pixmap as the clock background (size must be 64x64).
-H COLOR, --hands-color=COLOR
Draw the hands (hour, minute and second) in the specified color.
-S COLOR, --second-hand-color
Draw the second hand in the specified color
-h, --help
Show summary of options.
--hour-hand-length=INT
Draw the hour hand with the specified length of INT.
--minute-hand-length=INT
Draw the minute hand with the specified length of INT.
--second-hand-length=INT
Draw the second hand with the specified length of INT.
--second-hand-width=INT
Draw the minute hand with the specified width of INT.
-s, --second-hand
Don't display the second hand.
-v, --version
Show version of program.
-w, --withdrawn
Don't start up in a withdrawn (iconic) state.
AUTHOR
This manual page was written by Darren Benham <gecko@debian.org>, for the Debian GNU/Linux system (but may be used by others). The soft-
ware is copyrighted (c) 1998 by and released under the GPL v2.
Author: Alexander Kourakos <Alexander@Kourakos.com>
Web: http://www.kourakos.com/~awk/pclock/
PCLOCK(1)