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Top Forums Shell Programming and Scripting How to perform arithmetic operation on date Post 302237396 by dennis.jacob on Wednesday 17th of September 2008 03:02:02 PM
Old 09-17-2008
Try:

Use date -d as shown below:

Quote:
date -d "$var days "
Wed Sep 24 00:30:27 IST 2008
var=60
date -d "$var days "
Mon Nov 17 00:30:37 IST 2008
 

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FAXCRON(8C)															       FAXCRON(8C)

NAME
faxcron - HylaFAX routine maintenance script SYNOPSIS
/usr/sbin/faxcron [ -n ] [ -l lastrun ] DESCRIPTION
faxcron is a command script that does routine upkeep tasks in a HylaFAX spooling directory hierarchy. This script is intended to be invoked from cron(8C) on behalf of the fax user (often the ``fax'' user is uucp) once a day, with the standard output sent by mail to the HylaFAX administrator. For example, the following crontab might be set up for the fax user: 25 23 * * * sh /usr/sbin/faxcron | mail FaxMaster The faxcron script does the following work: o report statistics for facsimile transmitted since the last time faxcron was run. o report statistics for facsimile transmitted in the past week. o report statistics for facsimile received since the last time faxcron was run. o report statistics for facsimile received in the past week. o report any recent calls that failed suspiciously and return the associated trace log; o purge data that is 30 days or older from the remote machine information directory; o delete information that is 30 days or older from session trace log files; o remove files from the tmp directory that are older than 1 day; o remove files in the received facsimile queue that are 7 days or older; o report sites that are currently having jobs rejected; and o force all session log files to be owned by the fax user and kept with protection mode 644. OPTIONS
-n Forces faxcron to run without updating any files. -l lastrun Forces the notion of the last time that faxcron was run to be lastrun. The value of lastrun is a date and time string of the form ``MM/DD/YY HH:MM'' (the date(1) format string ``%D %H:%M''). -info n Set the expiration time for data in the info database to be n days. -log n Set the expiration time for session log data to be n days. -rcv n Set the expiration time for files in the received facsimile queue to be n days. -tmp n Set the expiration time for files in the tmp directory to be n days. -mode m Set the file protection mode for session logs to m (a command line argument to chmod(1)). NOTES
This script requires nawk(1) or gawk(1) and a date(1) program that supports the ``+format'' option. If session logs are to be kept private this script must be modified to filter out sensitive information such as calling card numbers. (It should also be run with ``-mode 0600'' so that session log files are not publicly readable.) FILES
/var/spool/fax spooling area /var/spool/fax/etc/lastrun timestamp of last run /usr/sbin/xferfaxstats for generating transmit statistics /usr/sbin/recvstats for generating receive statistics /var/spool/fax/tmp/faxcronXXXX temporary file for truncating session logs /var/spool/fax/tmp/faxlogXXXX temporary file for logs of failed calls SEE ALSO
cron(8C), faxq(8C), faxgetty(8C), faxsend(8C), xferfaxstats(8C), recvstats(8C), hylafax-server(5F) May 12, 1996 FAXCRON(8C)
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