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While we are on the subject of dates. Another date question


 
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Top Forums UNIX for Dummies Questions & Answers While we are on the subject of dates. Another date question
# 15  
Old 10-24-2003
There is a time command that will feed back elapsed and system times.
The format to use in a script would be like:
(time command ) > filename.time 2>&1

You will see output like
real 10.5
user 0.3
sys 3.6

in the filename.time file...

check the man pages for time command.
 

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cron(1M)						  System Administration Commands						  cron(1M)

NAME
cron - clock daemon SYNOPSIS
/usr/sbin/cron DESCRIPTION
cron starts a process that executes commands at specified dates and times. You can specify regularly scheduled commands to cron according to instructions found in crontab files in the directory /var/spool/cron/crontabs. Users can submit their own crontab file using the crontab(1) command. Commands which are to be executed only once can be submitted using the at(1) command. cron only examines crontab or at command files during its own process initialization phase and when the crontab or at command is run. This reduces the overhead of checking for new or changed files at regularly scheduled intervals. As cron never exits, it should be executed only once. This is done routinely by way of the svc:/system/cron:default service. The file /etc/cron.d/FIFO file is used as a lock file to prevent the execution of more than one instance of cron. cron captures the output of the job's stdout and stderr streams, and, if it is not empty, mails the output to the user. If the job does not produce output, no mail is sent to the user. An exception is if the job is an at(1) job and the -m option was specified when the job was submitted. cron and at jobs are not executed if your account is locked. Jobs and processses execute. The shadow(4) file defines which accounts are not locked and will have their jobs and processes executed. Setting cron Jobs Across Timezones The timezone of the cron daemon sets the system-wide timezone for cron entries. This, in turn, is by set by default system-wide using /etc/default/init. If some form of daylight savings or summer/winter time is in effect, then jobs scheduled during the switchover period could be executed once, twice, or not at all. Setting cron Defaults To keep a log of all actions taken by cron, you must specify CRONLOG=YES in the /etc/default/cron file. If you specify CRONLOG=NO, no log- ging is done. Keeping the log is a user configurable option since cron usually creates huge log files. You can specify the PATH for user cron jobs by using PATH= in /etc/default/cron. You can set the PATH for root cron jobs using SUPATH= in /etc/default/cron. Carefully consider the security implications of setting PATH and SUPATH. Example /etc/default/cron file: CRONLOG=YES PATH=/usr/bin:/usr/ucb: This example enables logging and sets the default PATH used by non-root jobs to /usr/bin:/usr/ucb:. Root jobs continue to use /usr/sbin:/usr/bin. The cron log file is periodically rotated by logadm(1M). FILES
/etc/cron.d Main cron directory /etc/cron.d/FIFO Lock file /etc/default/cron cron default settings file /var/cron/log cron history information /var/spool/cron Spool area /etc/cron.d/queuedefs Queue description file for at, batch, and cron /etc/logadm.conf Configuration file for logadm ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
svcs(1), at(1), crontab(1), sh(1), logadm(1M), svcadm(1M), queuedefs(4), shadow(4), attributes(5), smf(5) NOTES
The cron service is managed by the service management facility, smf(5), under the service identifier: svc:/system/cron:default Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using svcadm(1M). The ser- vice's status can be queried using the svcs(1) command. DIAGNOSTICS
A history of all actions taken by cron is stored in /var/cron/log and possibly in /var/cron/olog. SunOS 5.10 5 Aug 2004 cron(1M)

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