Acces Rights of a backgrounded process

neb9002@gmail.com · *nix forums beginner Joined: 05 May 2006 Posts: 2

Hello,

I am using a perl script to check for the existence of a process every
5 seconds and under specific circumstances kill the process identified.

The script is launched as root and backgrounded from rc.local.
It is capable of performing all actions (e.g. read/write files etc)
with root privileges except from actually killing another process.

I believe that I have also ruled out any specific perl related issue by
implementing a similar shell script. It suffers from the very same
problem.

Can anybody suggest what the issue might be?

I understand that the "mode" of a script running from rc is different
to one launched from a command line (which incidentally works fine for
both perl and shell scripts).

Thanks in advance....

H.

DoN. Nichols · *nix forums beginner Joined: 20 Feb 2005 Posts: 33

According to <neb9002@gmail.com>:

neb9002@gmail.com · *nix forums beginner Joined: 05 May 2006 Posts: 2

Hello,

Thanks for your efforts, they were atually fruitfull in an unexpected
way.

I failed to say before that I did try giving the full path to commands
I used and there were no errors in the perl script for modules not
being found.

However, I did look into the special case when a script/shell is
launched from the rc scripts and more psecifically how it affects the
enviroment variables and shell options.

It turns out that the problem was that the width of terminal set by
default was so narrow that the fields I was filtering on were not
there!

Instead of changing configs for the shell, I simply used a 'ps -axo
user,pid,command' which allows for all the data to be presented and
everything worked fine!

Thanks again for your effort

H.

DoN. Nichols · *nix forums beginner Joined: 20 Feb 2005 Posts: 33

According to <neb9002@gmail.com>:

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