topic Re: cronjob in Operating System - HP-UX

cronjob

malay boy — Tue, 08 Apr 2003 05:38:02 GMT

Hi does anybody know what this mean ?.

45 00 * * * [ -d /apps/oracle ]&& /apps/sta.sh

This was specified in cronjob(crontab -l).what I don't unserstand is what [ ] is doing ???

Thanks

Re: cronjob

Balaji N — Tue, 08 Apr 2003 05:40:09 GMT

hi
this is a simple online script.
the [ ] is for test.
if that directory exists, /apps/sta.sh will be run.

hth
-balaji

Re: cronjob

Ravi_8 — Tue, 08 Apr 2003 05:46:08 GMT

Hi,

at 12:45 a.m if the /apps/oracle directory exist,then cron will execute the script/apps/sta.sh

Re: cronjob

Michael Tully — Tue, 08 Apr 2003 05:51:05 GMT

This is testing for a directory to be present.
I for one would not be doing this in the crontab file. The crontab file does not cater for environement variables.
The testing of the directory should be in the /apps/sta.sh script. If the directory present fails, the script terminates.

if [ -d /apps/oracle ]
do
....
else
exit
done

Re: cronjob

malay boy — Wed, 09 Apr 2003 02:17:44 GMT

Thanks guy .you are much help.I'm new in scripting.Any idea where can get the document on scripting.

Re: cronjob

Michael Tully — Wed, 09 Apr 2003 02:35:19 GMT

Hi,

There is lots of these. The best way is to do a search from
www.google.com
search for shell script tutorials

Here are some links in the forums, that have some great scripts and links to site where there are number of further examples.

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x836cc1c4ceddd61190050090279cd0f9,00.html

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x026250011d20d6118ff40090279cd0f9,00.html

Cheers
Michael

Re: cronjob

Balaji N — Wed, 09 Apr 2003 04:20:10 GMT

see the shell users guide. u will get some basics.

http://docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B2355-90046/B2355-90046_top.html&con=/hpux/onlinedocs/B2355-90046/00/00/64-con.html&toc=/hpux/onlinedocs/B2355-90046/00/00/64-toc.html&searchterms=posix%7cshell%7cusers%7cguide&queryid=20030408-231630

and search the forums for favorite (not sure of the spe lling) scripts. u should get plenty of them for study / use.

-balaji