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Hey Everybody,
Just a simple question.
How do I get the PID of my running perl script.
I would like to have it in my perlscript so I can write it to a .pid file.
Thanks guys,
Mads
- --
Mads N. Vestergaard - http://rwxr-xr-x.dk
Interested in Open Source, and web application development
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Full Version: PID of a perl script
Mads N. Vestergaard wrote:
| QUOTE |
| -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hey Everybody, |
Hi there!
| QUOTE |
| Just a simple question. How do I get the PID of my running perl script. |
Check out the doc 'perlvar'.
# perldoc perlvar
Then, do a search for 'PID'.
It's in there.
| QUOTE |
| Thanks guys, Mads |
Always happy to help!
Always check those perldocs first!!
--Errin
Mads N. Vestergaard wrote:
| QUOTE |
| Hey Everybody, Just a simple question. How do I get the PID of my running perl script. I would like to have it in my perlscript so I can write it to a .pid file. Thanks guys, Mads |
$$ is a special variable that holds what you are after.
perldoc perlvar
For other special variables.
http://danconia.org
On 7/11/05, Mads N. Vestergaard <[Email Removed]> wrote:
| QUOTE |
| -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hey Everybody, Just a simple question. How do I get the PID of my running perl script. I would like to have it in my perlscript so I can write it to a .pid file.. Thanks guys, Mads - -- Mads N. Vestergaard - http://rwxr-xr-x.dk Interested in Open Source, and web application development |
It's stored in the special variable $$. See perlvar for details.
You might also want to check out the cpan File::Pid module, which
automates pid file management.
-- jay
--------------------------------------------------
This email and attachment(s): [ ] blogable; [ x ] ask first; [ ]
private and confidential
daggerquill [at] gmail [dot] com
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Hey again,
Thanks for the replies.
I also got it ton work, but I still have on question. Too get the actual
PID i need to say $$+1, do you guys have any idea why I should do that.
In perlvar it also says $PID should return the pid. It doesn't work for
me, cann I be doing something wrong?
Thanks
Jay Savage wrote:
| On 7/11/05, Mads N. Vestergaard <[Email Removed]> wrote:
|
|>-----BEGIN PGP SIGNED MESSAGE-----
|>Hash: SHA1
|>
|>Hey Everybody,
|>
|>Just a simple question.
|>How do I get the PID of my running perl script.
|>I would like to have it in my perlscript so I can write it to a .pid file.
|>
|>Thanks guys,
|>
|>Mads
|>
|>- --
|>Mads N. Vestergaard - http://rwxr-xr-x.dk
|>Interested in Open Source, and web application development
|
|
| It's stored in the special variable $$. See perlvar for details.
|
| You might also want to check out the cpan File::Pid module, which
| automates pid file management.
|
| -- jay
| --------------------------------------------------
| This email and attachment(s): [ ] blogable; [ x ] ask first; [ ]
| private and confidential
|
| daggerquill [at] gmail [dot] com
|
- --
Mads N. Vestergaard - http://rwxr-xr-x.dk
Interested in Open Source, and web application development
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Hash: SHA1
Hey again,
Thanks for the replies.
I also got it ton work, but I still have on question. Too get the actual
PID i need to say $$+1, do you guys have any idea why I should do that.
In perlvar it also says $PID should return the pid. It doesn't work for
me, cann I be doing something wrong?
Thanks
Jay Savage wrote:
| On 7/11/05, Mads N. Vestergaard <[Email Removed]> wrote:
|
|>-----BEGIN PGP SIGNED MESSAGE-----
|>Hash: SHA1
|>
|>Hey Everybody,
|>
|>Just a simple question.
|>How do I get the PID of my running perl script.
|>I would like to have it in my perlscript so I can write it to a .pid file.
|>
|>Thanks guys,
|>
|>Mads
|>
|>- --
|>Mads N. Vestergaard - http://rwxr-xr-x.dk
|>Interested in Open Source, and web application development
|
|
| It's stored in the special variable $$. See perlvar for details.
|
| You might also want to check out the cpan File::Pid module, which
| automates pid file management.
|
| -- jay
| --------------------------------------------------
| This email and attachment(s): [ ] blogable; [ x ] ask first; [ ]
| private and confidential
|
| daggerquill [at] gmail [dot] com
|
- --
Mads N. Vestergaard - http://rwxr-xr-x.dk
Interested in Open Source, and web application development
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Please bottom post...
Mads N. Vestergaard wrote:
Mads N. Vestergaard wrote:
| QUOTE |
| Hey again, Thanks for the replies. I also got it ton work, but I still have on question. Too get the actual PID i need to say $$+1, do you guys have any idea why I should do that. |
Without seeing some code no, though if there is any forking going on
then that might explain it. What system/OS?
| QUOTE |
| In perlvar it also says $PID should return the pid. It doesn't work for me, cann I be doing something wrong? |
First couple of sentences of perldoc perlvar indicate:
"Nevertheless, if you wish to use long variable names, you need only say
use English;
at the top of your program. This aliases all the short names to the long
names in the current package." Note IIRC there is a performance hit at
least at startup.
| QUOTE |
| Thanks |
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