topic Re: query about crontab in Operating System - HP-UX

query about crontab

Rajesh G. Ghone — Fri, 30 May 2003 03:52:15 GMT

Hello all,

How do i schedule any jobs in cron??

Any answere will be appreciable.

Regards,
Rajesh G.

Re: query about crontab

Michael Tully — Fri, 30 May 2003 04:01:13 GMT

The man pages explain this:

Minute hour monthday Month weekday job

e.g.

15 1 * * 0 /usr/local/bin/fred

Runs a program called 'fred' at 1:15AM every sunday morning.
See this document
http://docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B9106-90008/B9106-90008_top.html&con=/hpux/onlinedocs/B9106-90008/00/00/70-con.html&toc=/hpux/onlinedocs/B9106-90008/00/00/70-toc.html&searchterms=cron&queryid=20030529-225932

Regards
Michael
"When I have trouble spelling, it's called fat finger syndrome"

Re: query about crontab

Con O'Kelly — Fri, 30 May 2003 04:04:06 GMT

Hi
Use # crontab -e, make your entries and save.
If its a user other than root, ensure that they have cron access through editing /var/adm/cron.allow. Then as that user simply use crontab -e.
For info on specific fields in cron, see man cron.

Cheers
Con

Re: query about crontab

Yogeeraj_1 — Fri, 30 May 2003 04:04:36 GMT

hi,

If you consider this simple cron script:

#*******************************************************************************
# min|hour |day |month|day |script |Logging Error and Output
# | |of mo| |of wk| |
#----|-----|-----|-----|-----|-----------------------------|---------------------
00 03 * * * /prod/allscripts/myscript.sh 1>/prod/allscripts/logfiles/output.log 1>/prod/allscripts/logfiles/error.log
#*******************************************************************************
# END OF TABLE day0->Sunday day6->Saturday
#*******************************************************************************

where the script i want to schedule is: /prod/allscripts/myscript.sh
and the output generated during execution is: /prod/allscripts/logfiles/output.log
and the error generated during execution is: /prod/allscripts/logfiles/error.log

you can schedule is either by:

1. editing the crontab table directly:
crontab -e

2. Loading the script from a file
crontab mycron.crn

For more information, do:
man cron
man crontab

if you any further queries, please revert.

hope this helps!

regards
Yogeeraj

Re: query about crontab

Con O'Kelly — Fri, 30 May 2003 04:05:00 GMT

Sorry typo above file is /var/adm/cron/cron.allow

Re: query about crontab

Yogeeraj_1 — Fri, 30 May 2003 04:08:54 GMT

hi again,

also

to view the current crontab, do

crontab -l

I have attached the sample crontab as an example. Make sure that you make necessary modifications to /var/adm/cron/cron.allow (the List of allowed users)

regards
Yogeeraj

Re: query about crontab

Massimo Bianchi — Fri, 30 May 2003 06:28:07 GMT

Hi,
editing the crontab is usefull for scheduling jobs at regular intervals.

IF you weant to schedule job you can also use the

"at" command.

at -f /mysfiles.sh now

schedule a job for now,

at -l

showw jobs scheduled for start.

In the directory /var/spool/cron/ ypu can find the files where is stored the information for later start.

man at will give you much more infos.

HTH,
Massimo