Marc Powell <li...@xodus.org> writes:
> On Oct 19, 2010, at 2:20 PM, steve f wrote:
>
>> Hello All,
>>
>> I have the following script created to check free space on a remote legacy
>> box via rsh.
>>
>> used=`sudo rsh $1 df -v |grep starlite6 | head -1 | awk '{print $4}'`
>> free=`sudo rsh $1 df -v |grep starlite6 | head -1 | awk '{print $5}'`
>
> Beyond just good programming practice, always use full paths to external
> programs within your scripts. $PATH may not be what you expect it to be,
> especially when being run by the nagios daemon which has a more restrictive
> environment.
>
> # (paths may be different on your system)
> used=`/usr/bin/sudo /usr/bin/rsh $1 /bin/df -v | /bin/grep starlite |
> /usr/bin/head -1 | /usr/bin/awk '{print $4}'`
Or... set PATH before doing anything else, e.g.
#!/bin/bash
PATH=/bin:/sbin:/usr/bin:/usr/sbin
export PATH
[...rest of script...]
This will enhance readability wrt. using full paths everywhere.
Cheers,
--
Trond H. Amundsen <t.h.amund...@usit.uio.no>
Center for Information Technology Services, University of Oslo
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