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Top Forums Shell Programming and Scripting Adding days to system date then compare to a date Post 302593115 by kokoro on Wednesday 25th of January 2012 05:08:44 PM
Old 01-25-2012
Adding days to system date then compare to a date

Hi! I am trying to read a file and every line has a specific date as one of its fields.
I want to take that date and compare it to the date today plus 6 days.

Code:
while read line
do
   date=substr($line, $datepos, 8) #date is expected to be YYYYMMDD
   if [ date > (date today + 6) ]; then
      ...proceed commands 
   fi
done

i need to accurately add 6 days to the current date and compare it to the date i extracted from the file.
Gurus, please help Smilie
 

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

NAME
lchage - Display or change user password policy SYNOPSIS
lchage [OPTION]... user DESCRIPTION
Displays or allows changing password policy of user. OPTIONS
-d, --date=days Set the date of last password change to days after Jan 1 1970. -E, --expire=days Set the account expiration date to days after Jan 1 1970. Set days to -1 to disable account expiration. -i, --interactive Ask all questions when connecting to the user database, even if default answers are set up in libuser configuration. -I, --inactive=days Disable the account after days after password expires (after the user user is required to change the password). -l, --list Only list current user's policy and make no changes. -m, --mindays=days Require at least days days between password changes. Set days to 0 to disable this checking. -M, --maxdays=days Require changing the password after days since last password change. Set days to 99999 to disable this checking. -W, --warndays=days Start warning the user days before password expires (before the user is required to change the password). EXIT STATUS
The exit status is 0 on success, nonzero on error. libuser Jan 12 2005 lchage(8)
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