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Full Discussion: Help with looping a file and grepping a string
Operating Systems AIX Help with looping a file and grepping a string Post 302511796 by ctsgnb on Thursday 7th of April 2011 02:35:07 PM
Old 04-07-2011
Before explaining further, please consider the following statement, observe what happend in each column and with a bit of deduction you will get it
This should help you to understand :

Code:
# nawk '{print NR,FNR,FILENAME,$0}' f1 f2
1 1 f1 admin.teacher is in new york;
2 2 f1 admin.mason is in new york;
3 3 f1 admin.driver is in new york city;
4 4 f1 user.trucker is in hartford;
5 5 f1 admin.developer is in new york state;
6 1 f2 admin.teacher is in chigago;
7 2 f2 user.teacher is in new york;
8 3 f2 admin.mason is in new york;
9 4 f2 admin.developer is in new york state;
10 5 f2 admin.plumber is in new york;
11 6 f2 admin.driver is in new york city;
12 7 f2 user.trucker is in hartford;
13 8 f2 admin.nurse is in new york state;
14 9 f2 admin.teacher is in new york;
15 10 f2 user.painter is in new york;

---------- Post updated at 08:35 PM ---------- Previous update was at 08:18 PM ----------

if NR==FNR, we are scanning the first file we build an associative array indexed by the content of the line
if NR!=FNR, we are scanning the other file (note that when the scan of the second file start, the first file has already been entirely scanned so if an element of the previously built array is found based on the content of $0, then we add it "--"$0 otherwise we just leave it as is :$0
 

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LEARN ABOUT DEBIAN

time-admin

time-admin(1)						      General Commands Manual						     time-admin(1)

NAME

       time-admin - Time Administration Tool

SYNOPSIS

       time-admin [OPTION...]

DESCRIPTION

       time-admin is part of the GNOME system tools, a set of tools to easily access and manage system configuration.

       time-admin  allows you to set the time, date and timezone of your system, as well as setting any time server to synchronize your local time
       server.

OPTIONS

       time-admin accepts the standard GNOME and GTK options.

AUTHORS

       time-admin was written by Carlos Garnacho Parro <garnacho@tuxerver.net> and others.

       This manual page was written by Sven Arvidsson <sa@whiz.se>, for the Debian project (but may be used by others).

SEE ALSO

       services-admin(1), shares-admin(1), network-admin(1), users-admin(1), gtk-options(7), gnome-options(7)

       The online documentation available through the program's Help menu.

GNOME
								    2007-05-08							     time-admin(1)
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