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Homework and Emergencies Homework & Coursework Questions How to use xargs to repeat as a loop to grab date string? Post 302927082 by scopiop on Sunday 30th of November 2014 09:53:46 PM
Old 11-30-2014
Thank you for your helps.

I have thought about how to approach how to write this program but did not knowing how the log system work. There fore, I ask some questions here may offend the integrity of the forum.

First I thought if I knew how to manipulate the date string then I can control the log count of every 14 days. So I wonder how to grep things and strip things off. I had problem with bracket attach to date format such as
Code:
[15/Nov/…….

From the last lecture we have learned using Tr command I found it is useful to apply on how to remove the bracket.

I realized the easiest way to get the total requests of every 14 days
is find the line number of every break point of 14 days…… 0, 14, 24, 42 etc.

Pseudo:
Find the last line of the most current time in log file
Find the line number of request 14 days ago ("+%d/%b/%Y:%H:%M")
Then subtract the different to get the total number request of 14 days ago.


Thank you again,

Scopiop

Last edited by scopiop; 12-01-2014 at 02:32 PM..
 

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lchage(1)						      General Commands Manual							 lchage(1)

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. Set days to -1 to disable password expiration (i.e. to ignore --mindays, and --maxdays and related settings). Set days to 0 to enforce password change on next login. (This also disables password expiration until the password is changed.) -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 is required to change the password). Set days to -1 to keep the account enabled indefinitely after password expiration. -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 or -1 to disable this requirement. If this value is larger than the value set by --maxdays, the user cannot change the pasword. -M, --maxdays=days Require changing the password after days since last password change. Set days to -1 to disable password expiration. -W, --warndays=days Start warning the user days before password expires (before the user is required to change the password). Set days to 0 or -1 to disable the warning. EXIT STATUS
The exit status is 0 on success, nonzero on error. NOTES
Note that "account expiration" (set by --expire) is distinct from "password expiration" (set by --maxdays). Account expiration happens on a fixed date regardless of password changes. Password expiration is relative to the date of last password change. libuser Nov 8 2012 lchage(1)
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