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Full Discussion: Date manipulation using awk
Top Forums Shell Programming and Scripting Date manipulation using awk Post 302860135 by victory101 on Friday 4th of October 2013 04:04:38 PM
Old 10-04-2013
Thanks Corona for the reply.

As I was having the date in $4, I changed as follows.

Code:
  gawk -F, -v OFS=, '{ split(/-/, A, $4); T=systime()-mktime(sprintf("%04d %02d %02d 00 00 00", A[1], A[2], A[3]));
        T/=(60*60*24);
        $4=T;        
 } 1' inputfile

$ cat inputfile
John,Miami,,2013-10-03

$ date
Fri Oct  4 23:17:36 AST 2013

$ bash -x scr.sh
+ gawk -F, -v OFS=, '{ split(/-/, A, $4); T=systime()-mktime(sprintf("%04d %02d %02d 00 00 00", A[1], A[2], A[3]));
        T/=(60*60*24);
        $4=T;        
 } 1' inputfile
John,Miami,,735177

Kindly help, as it is not giving the expected result.

I changed to gawk, as I'm running on Linux.

Last edited by Corona688; 10-04-2013 at 06:43 PM..
 

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UNSHADOW(8)						      System Manager's Manual						       UNSHADOW(8)

NAME
unshadow - combines passwd and shadow files SYNOPSIS
unshadow password-file shadow-file DESCRIPTION
This manual page documents briefly the unshadow command, which is part of the john package. This manual page was written for the Debian GNU/Linux distribution because the original program does not have a manual page. john, better known as John the Ripper, is a tool to find weak passwords of users in a server. The unshadow tool combines the passwd and shadow files so John can use them. You might need this since if you only used your shadow file, the GECOS information wouldn't be used by the "single crack" mode, and also you wouldn't be able to use the '-shells' option. On a normal system you'll need to run unshadow as root to be able to read the shadow file. SEE ALSO
john(8), mailer(8), unafs(8), unique(8). The programs are documented fully by John's documentation, which should be available in /usr/share/doc/john or other location, depending on your system. AUTHOR
This manual page was written by Jordi Mallach <jordi@debian.org>, for the Debian GNU/Linux system (but may be used by others). John the Ripper and mailer were written by Solar Designer <solar@openwall.com>. The complete list of contributors can be found in the CRED- ITS file in the documentation directory. john June 03, 2004 UNSHADOW(8)
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