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Top Forums Shell Programming and Scripting calculating the time difference, when the script was executed and the currenent file Post 302214629 by methyl on Monday 14th of July 2008 12:03:11 PM
Old 07-14-2008
Hmm "stat" is not a HP UX command. It's on some Linux distributions but not a portable unix command.

Personally I'd use cron to run the script every 5 mins during the monitoring period.

Start the cron 5 minutes earlier than the start of your monitoring period.
Define a timestamp filename containing todays date:
YYYYMMDD="`date +%Y%m%d`"
my_timestamp="my_prefix${YYYMMDD}"

At the start of the script if the timestamp file does not exist, create it with unix "touch" and exit.

On the second and subsequent invocations the file will exist. You can then easily check whether the alert file timestamp is more than 5 minutes old with "find ... -type f ! -newer $my_timestamp ... ".

At the end of the script "touch" the timestamp file ready for next time.

You will need some code to delete old timestamp files, so choose a unique prefix for the timestamp filename.
Beware: Recursive alert log checkers can easily generate multiple alarms for one incident unless you code to deal with this.
 

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PAM_TIMESTAMP_CHECK(8)						 Linux-PAM Manual					    PAM_TIMESTAMP_CHECK(8)

NAME
pam_timestamp_check - Check to see if the default timestamp is valid SYNOPSIS
pam_timestamp_check [-k] [-d] [target_user] DESCRIPTION
With no arguments pam_timestamp_check will check to see if the default timestamp is valid, or optionally remove it. OPTIONS
-k Instead of checking the validity of a timestamp, remove it. This is analogous to sudo's -k option. -d Instead of returning validity using an exit status, loop indefinitely, polling regularly and printing the status on standard output. target_user By default pam_timestamp_check checks or removes timestamps generated by pam_timestamp when the user authenticates as herself. When the user authenticates as a different user, the name of the timestamp file changes to accommodate this. target_user allows to specify this user name. RETURN VALUES
0 The timestamp is valid. 2 The binary is not setuid root. 3 Invalid invocation. 4 User is unknown. 5 Permissions error. 6 Invalid controlling tty. 7 Timestamp is not valid. NOTES
Users can get confused when they are not always asked for passwords when running a given program. Some users reflexively begin typing information before noticing that it is not being asked for. EXAMPLES
auth sufficient pam_timestamp.so verbose auth required pam_unix.so session required pam_unix.so session optional pam_timestamp.so FILES
/var/run/sudo/... timestamp files and directories SEE ALSO
pam_timestamp_check(8), pam.conf(5), pam.d(5), pam(8) AUTHOR
pam_tally was written by Nalin Dahyabhai. Linux-PAM Manual 06/04/2011 PAM_TIMESTAMP_CHECK(8)
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