Re: [ilugd] ps and grep
On 17 Jan 2008, [EMAIL PROTECTED] wrote: Puneet I tried ps -elo pid,args|grep myprocess\\!(grep) The argument of grep is a regular expression (type 3 language), and there is no way you can do this in a type 3 language. Even 'grep' also matches 'grep' text when you pass '-v grep' argument to 'grep' command line, and then only outputs unmatched lines. I used two pipes to eliminates the extraneous grep, until some pointed out that all you need to do it make the regexp different from the matched string, viz. $ ps -e | grep [m]ysql Elegant, I thought. -- Alok Why won't sharks eat lawyers? Professional courtesy. ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - February 22/23, 2008 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] ps and grep
On Jan 21, 2008 4:53 PM, Alok G. Singh [EMAIL PROTECTED] wrote: I used two pipes to eliminates the extraneous grep, until some pointed out that all you need to do it make the regexp different from the matched string, viz. $ ps -e | grep [m]ysql This is elegant. Thanks. -- Puneet http://sahyog.blogspot.com/ Latest Post: Tutorial on SVN setup and usage ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - February 22/23, 2008 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] ps and grep
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Puneet == Puneet Lakhina [EMAIL PROTECTED] writes: Puneet Hi, Puneet I have to frequently find the process ids of particular processes using a Puneet combination of ps and grep. You can try 'pidof'[1], if you're simply interested in find pid of a process :) [snipped] Puneet But I was wondering if there was a way for me to specify this in the regular Puneet expression for the first grep itself. Puneet I tried ps -elo pid,args|grep myprocess\\!(grep) The argument of grep is a regular expression (type 3 language), and there is no way you can do this in a type 3 language. Even 'grep' also matches 'grep' text when you pass '-v grep' argument to 'grep' command line, and then only outputs unmatched lines. References: [1] - http://en.wikipedia.org/wiki/Pidof HTH - -- Ashish Shukla आशीष शुक्ल http://wahjava.wordpress.com/ ·-- ·- ·--- ·- ···- ·- ·--·-· --· -- ·- ·· ·-·· ·-·-·- -·-· --- -- -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFHjxaoHy+EEHYuXnQRAhSeAJ9xqesGE9zmVAxwrra5qL2vK2Va3QCfbIIH OGJttE+PSg5/oPivzZKcrBA= =hoWY -END PGP SIGNATURE- ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - February 22/23, 2008 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] ps and grep
Puneet == Puneet Lakhina [EMAIL PROTECTED] writes: Puneet Hi, Puneet I have to frequently find the process ids of particular processes using a Puneet combination of ps and grep. You can try 'pidof'[1], if you're simply interested in find pid of a process :) [snipped] Puneet But I was wondering if there was a way for me to specify this in the regular Puneet expression for the first grep itself. Puneet I tried ps -elo pid,args|grep myprocess\\!(grep) The argument of grep is a regular expression (type 3 language), and there is no way you can do this in a type 3 language. Even 'grep' also matches 'grep' text when you pass '-v grep' argument to 'grep' command line, and then only outputs unmatched lines. References: [1] - http://en.wikipedia.org/wiki/Pidof use pgrep and pkill instead their man page says: pgrep, pkill - look up or signal processes based on name and other attributes I use both quite often :-) ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - February 22/23, 2008 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] ps and grep
Ashish Shukla आशीष शुक्ल [EMAIL PROTECTED] writes: Puneet == Puneet Lakhina puneet.lakhina at gmail.com writes: Puneet Hi, Puneet I have to frequently find the process ids of particular processes using a Puneet combination of ps and grep. You can try 'pidof'[1], if you're simply interested in find pid of a process :) [snipped] Puneet But I was wondering if there was a way for me to specify this in the regular Puneet expression for the first grep itself. Puneet I tried ps -elo pid,args|grep myprocess\\!(grep) The argument of grep is a regular expression (type 3 language), and there is no way you can do this in a type 3 language. Even 'grep' also matches 'grep' text when you pass '-v grep' argument to 'grep' command line, and then only outputs unmatched lines. Type 3 and all that: reference: http://en.wikipedia.org/wiki/Regular_language Makes my eyes glaze over. And ps output formats confuse me (see the man page if you want to make your eyes froth and bleed like in a horror movie). Puneet, with GNU ps what you're trying to do might be done by: ps -A | grep myprocess and if you really want to use the elo options (using that makes my GNU ps barf so I haven't tested it), then maybe stick [] around the first character in myprocess (ie, make it: [m]yprocess, see if that does the job): ps -elo pid,args | grep [m]yprocess I don't think there's a restriction on excluding the inclusion of grep in a grep based on it being type 3. YMMV PJ PS: pgrep, pkill, pidof (like others have said) may be handier for your needs. ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - February 22/23, 2008 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] ps and grep
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 ,--[ On Thu, Jan 17, 2008 at 09:55:33AM +, pj wrote: | Ashish Shukla आशीष शुक्ल [EMAIL PROTECTED] writes: | | Puneet == Puneet Lakhina puneet.lakhina at gmail.com writes: | Puneet Hi, | Puneet I have to frequently find the process ids of particular processes | using a | Puneet combination of ps and grep. | | You can try 'pidof'[1], if you're simply interested in find pid of a | process :) | | [snipped] | | Puneet But I was wondering if there was a way for me to specify this in | the regular | Puneet expression for the first grep itself. | | Puneet I tried ps -elo pid,args|grep myprocess\\!(grep) | | The argument of grep is a regular expression (type 3 language), and | there is no way you can do this in a type 3 language. Even 'grep' also | matches 'grep' text when you pass '-v grep' argument to 'grep' command | line, and then only outputs unmatched lines. I just noticed, that I'm able to make a FSM for matching that expression, which implies that I'm wrong. So, I'm sorry. Thanks - -- Ashish Shukla आशीष शुक्ल http://wahjava.wordpress.com/ ·-- ·- ·--- ·- ···- ·- ·--·-· --· -- ·- ·· ·-·· ·-·-·- -·-· --- -- -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFHjzSDHy+EEHYuXnQRAh1WAJ4yABQLt0KlDukd5gGaqFdLQQYfrwCdGhQj wi0jy/2cJpKullqsav8OB/w= =C6TR -END PGP SIGNATURE- ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - February 22/23, 2008 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
[ilugd] ps and grep
Hi, I have to frequently find the process ids of particular processes using a combination of ps and grep. For e.g. ps -elo pid,args|grep myprocess But the problem with above is that it gives me a line for the grep process also. e.g 213456 /home/puneet/myprocess 219876 grep myprocess The way I got around this was by using a further pipe ps -elo pid,args|grep myprocess|grep -v grep But I was wondering if there was a way for me to specify this in the regular expression for the first grep itself. I tried ps -elo pid,args|grep myprocess\\!(grep) But this does not give any output. I escaped the ! as without the escape it is considered by the shell as history lookup and it gives me no event found. -- Puneet http://sahyog.blogspot.com/ Latest Post: Tutorial on SVN setup and usage ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - February 22/23, 2008 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
