Re: problem with shell script
On Thu, 2011-01-13 at 14:45 -0600, Robert Bonomi wrote:
> > Date: Wed, 12 Jan 2011 15:01:45 +0100
> > From: Frank Bonnet
> > Subject: problem with shell script
> >
> > Hello
> >
> > I'm in trouble with a simple shell script that give erroneous value when
> > running ...
> >
> > If I run commands interactively everything runs well
> >
> > > ps ax | grep slapd | grep -v grep | wc -l
> >1
> >
> > If I run in the following shell script :
> >
> > #!/bin/sh
> > SD=0 SD=`ps -ax | grep slapd | grep -v grep | wc -l` echo $SD
> >
> > the result is 3 !!!
>
> Advice: don't try to 'out-think' the machine -- make it _show_ you what it
> is doing.
Might I suggest the oft-overlooked "o" option to ps(1)...
ps axo ucomm | grep -c slapd
I can't think of anything better to achieve what the OP wanted.
Naturally... for those that need more (that is, if you want to see
meaningful output rather than just the line-count)...
try:
ps axo pid,state,ucomm
or:
ps axo pid,command | awk '$2~/slapd/{print}'
naturally, for ``wider'' output:
ps axwwwo pid,command | awk '$2~/slapd/{print}'
And the creme-de-la-creme:
ps axwwwo pid,command | awk '$2~"^slapd$"||$2~"/slapd$"{print}'
which will only print a line if the first word of the entire command is
wholly "slapd" or ends in "/slapd".
Additional solutions/combinations left as an exercise to the reader.
--
Devin
(full sig at bottom)
>
> Change the script to:
>SD=`ps -ax | grep slapd | grep -v grep | tee /dev/tty | wc -l` echo $SD
>
>
> I suspect thet the -name- of the script file has 'slapd' in it.
>
>
>
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Re: problem with shell script
> Date: Wed, 12 Jan 2011 15:01:45 +0100 > From: Frank Bonnet > Subject: problem with shell script > > Hello > > I'm in trouble with a simple shell script that give erroneous value when > running ... > > If I run commands interactively everything runs well > > > ps ax | grep slapd | grep -v grep | wc -l >1 > > If I run in the following shell script : > > #!/bin/sh > SD=0 SD=`ps -ax | grep slapd | grep -v grep | wc -l` echo $SD > > the result is 3 !!! Advice: don't try to 'out-think' the machine -- make it _show_ you what it is doing. Change the script to: SD=`ps -ax | grep slapd | grep -v grep | tee /dev/tty | wc -l` echo $SD I suspect thet the -name- of the script file has 'slapd' in it. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: problem with shell script
??
as already answered:
ps ax | awk '/[/]slapd /{n++} END{print n}'
searching '[s]lapd' will avoid grep "auto-matching", but would still return
commands like "vim /etc/slapd.conf" or ./myscript-slapd
about pgrep, like the usual grep, it needs a better expression than the
process name, otherwise it would return the same results as a grep
however, a perfect match may be done looking for the exact path
('[/]usr/local/bin/slapd '), but would still fail when, for ex. running
`objdump /usr/local/bin/slapd -x'
also, if you want to count the number of outputed lines, using [p]grep and
wc makes two processes, while awk can do it all alone.
awk ftw!
On Wed, Jan 12, 2011 at 3:17 PM, wrote:
> Hello
>
> I'm in trouble with a simple shell script that give
> erroneous value when running ...
>
> If I run commands interactively everything runs well
>
> > ps ax | grep slapd | grep -v grep | wc -l
> 1
>
> If I run in the following shell script :
>
> #!/bin/sh
> SD=0
> SD=`ps -ax | grep slapd | grep -v grep | wc -l`
> echo $SD
>
> the result is 3 !!!
>
>
> Any info welcome !
>
> ___
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--
Samuel Martín Moro
{EPITECH.} 2011
CamTrace S.A.S
"Nobody wants to say how this works.
Maybe nobody knows ..."
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Re: problem with shell script
just use: pgrep "slapd" On 01/12/2011 15:17, four.harris...@googlemail.com wrote: Hello I'm in trouble with a simple shell script that give erroneous value when running ... If I run commands interactively everything runs well > ps ax | grep slapd | grep -v grep | wc -l 1 If I run in the following shell script : #!/bin/sh SD=0 SD=`ps -ax | grep slapd | grep -v grep | wc -l` echo $SD the result is 3 !!! Any info welcome ! ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org" ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org" -- No trees were killed in the creation of this message. However, many electrons were terribly inconvenienced. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
problem with shell script
Hello I'm in trouble with a simple shell script that give erroneous value when running ... If I run commands interactively everything runs well > ps ax | grep slapd | grep -v grep | wc -l 1 If I run in the following shell script : #!/bin/sh SD=0 SD=`ps -ax | grep slapd | grep -v grep | wc -l` echo $SD the result is 3 !!! Any info welcome ! ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org" ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: problem with shell script
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Thu, 13 Jan 2011, per...@pluto.rain.com wrote: |David Scheidt wrote: | |> ps ax | grep [s]lapd | wc -l |> |> The [] creates a one-character class that doesn't match the regex. | |Doesn't [s]lapd need to be quoted? [] are special to (at least some) |shells. Which FreeBSD version do you use? If it above 4.x you could try the following: `pgrep slapd | wc -l' or maybe `pgrep slapd | xargs ps | wc -l' or something like this, it depends on your criteria +---+ ! CANMOS ISP Network! +---+ ! Best regards ! ! Igor V. Ruzanov, network operational staff! ! e-Mail: ig...@canmos.ru ! +---+ -BEGIN PGP SIGNATURE- Version: GnuPG v1.2.6 (GNU/Linux) Comment: For info see http://quantumlab.net/pine_privacy_guard/ iD8DBQFNLserbt6QiUlK9twRAvApAKCoIAozDT98VzRkvE3bjPg9Fb2OZwCeLCVj l86YACf0Sd+Gu2vfujQNE/I= =pls0 -END PGP SIGNATURE- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: problem with shell script
David Scheidt wrote: > ps ax | grep [s]lapd | wc -l > > The [] creates a one-character class that doesn't match the regex. Doesn't [s]lapd need to be quoted? [] are special to (at least some) shells. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: problem with shell script
On Wednesday 12 January 2011 17:58:33 David Scheidt wrote: > > ps ax | grep [s]lapd | wc -l > > The [] creates a one-character class that doesn't match the regex. Easier > to type and grep should be a bit faster. And you can save another process by using ps ax | grep -c '[s]lapd' Although as others have pointed out, you can also use pgrep. Jonathan ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: problem with shell script
(2011/01/12 23:01), Frank Bonnet wrote: Hello I'm in trouble with a simple shell script that give erroneous value when running ... If I run commands interactively everything runs well > ps ax | grep slapd | grep -v grep | wc -l 1 If I run in the following shell script : #!/bin/sh SD=0 SD=`ps -ax | grep slapd | grep -v grep | wc -l` echo $SD the result is 3 !!! Any info welcome ! ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org" hello. i would rather use pgrep(1); pgrep -afl slapd for just counting purpose, pgrep -a slapd | wc -l is enough. it should work as expected in `` output. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: problem with shell script
(2011/01/13 01:00), Warren Block wrote: On Wed, 12 Jan 2011, Samuel Mart?n Moro wrote: On Wed, Jan 12, 2011 at 3:50 PM, Chad Kellerman wrote: On Wed, Jan 12, 2011 at 9:01 AM, Frank Bonnet wrote: I'm in trouble with a simple shell script that give erroneous value when running ... If I run commands interactively everything runs well ps ax | grep slapd | grep -v grep | wc -l 1 If I run in the following shell script : #!/bin/sh SD=0 SD=`ps -ax | grep slapd | grep -v grep | wc -l` echo $SD the result is 3 !!! ps ax | grep "[/]slapd " | wc -l may not fix the problem but still cleaner ps axc | grep slapd | wc -l is a little neater. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org" hello. i would rather use pgrep(1); pgrep -afl slapd for just counting purpose, pgrep -a slapd | wc -l is enough. i believe it should work all right as expected in `` output, as well. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: problem with shell script
Quoth Frank Bonnet on Wednesday, 12 January 2011: > Hello > > I'm in trouble with a simple shell script that give > erroneous value when running ... > > If I run commands interactively everything runs well > > > ps ax | grep slapd | grep -v grep | wc -l > 1 > > If I run in the following shell script : > > #!/bin/sh > SD=0 > SD=`ps -ax | grep slapd | grep -v grep | wc -l` > echo $SD > > the result is 3 !!! > > > Any info welcome ! > > ___ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org" Ever hear of pgrep(1)? -- Sterling (Chip) Camden| sterl...@camdensoftware.com | 2048D/3A978E4F http://camdensoftware.com | http://chipsquips.com | http://chipstips.com pgpzsxgMvlyzm.pgp Description: PGP signature
Re: problem with shell script
On Wed, 12 Jan 2011, Samuel Mart?n Moro wrote: On Wed, Jan 12, 2011 at 3:50 PM, Chad Kellerman wrote: On Wed, Jan 12, 2011 at 9:01 AM, Frank Bonnet wrote: I'm in trouble with a simple shell script that give erroneous value when running ... If I run commands interactively everything runs well ps ax | grep slapd | grep -v grep | wc -l 1 If I run in the following shell script : #!/bin/sh SD=0 SD=`ps -ax | grep slapd | grep -v grep | wc -l` echo $SD the result is 3 !!! ps ax | grep "[/]slapd " | wc -l may not fix the problem but still cleaner ps axc | grep slapd | wc -l is a little neater. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: problem with shell script
On Jan 12, 2011, at 10:43 AM, Samuel Martín Moro wrote:
> On W
>>
If I run in the following shell script :
#!/bin/sh
SD=0
SD=`ps -ax | grep slapd | grep -v grep | wc -l`
echo $SD
the result is 3 !!!
>>>
>> ps ax | grep "[/]slapd " | wc -l
>>
> ps ax | awk '/[/]slapd /{n++} END{print n}'
> sorry...
>
>> may not fix the problem
>> but still cleaner
ps ax | grep [s]lapd | wc -l
The [] creates a one-character class that doesn't match the regex. Easier to
type and grep should be a bit faster.
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Re: problem with shell script
On Wed, Jan 12, 2011 at 4:34 PM, Samuel Martín Moro wrote:
>
>
> On Wed, Jan 12, 2011 at 3:50 PM, Chad Kellerman wrote:
>
>> On Wed, Jan 12, 2011 at 9:01 AM, Frank Bonnet wrote:
>>
>> > Hello
>> >
>> > I'm in trouble with a simple shell script that give
>> > erroneous value when running ...
>> >
>> > If I run commands interactively everything runs well
>> >
>> > > ps ax | grep slapd | grep -v grep | wc -l
>> > 1
>> >
>> > If I run in the following shell script :
>> >
>> > #!/bin/sh
>> > SD=0
>> > SD=`ps -ax | grep slapd | grep -v grep | wc -l`
>> > echo $SD
>> >
>> > the result is 3 !!!
>> >
>>
> ps ax | grep "[/]slapd " | wc -l
>
ps ax | awk '/[/]slapd /{n++} END{print n}'
sorry...
> may not fix the problem
> but still cleaner
>
>> >
>> > Any info welcome !
>> >
>>
>> What's the name of your script? Hope it's not slapd_check.sh that will
>> cause and extra count in the ps, cus it will count itself.
>>
>>
>> Chad
>>
>> >
>> > ___
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>> > http://lists.freebsd.org/mailman/listinfo/freebsd-questions
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>> > freebsd-questions-unsubscr...@freebsd.org"
>> >
>>
>>
>>
>> --
>> A grasshopper walks into a bar and the bartender says "Hey, we have a
>> drink
>> named after you." And the grasshopper says "Really, You have a drink named
>> Murray?"
>> ___
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>> freebsd-questions-unsubscr...@freebsd.org"
>>
>
>
>
> --
> Samuel Martín Moro
> {EPITECH.} 2011
> CamTrace S.A.S
>
> "Nobody wants to say how this works.
> Maybe nobody knows ..."
> Xorg.conf(5)
>
--
Samuel Martín Moro
{EPITECH.} 2011
CamTrace S.A.S
"Nobody wants to say how this works.
Maybe nobody knows ..."
Xorg.conf(5)
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Re: problem with shell script
On Wed, Jan 12, 2011 at 3:50 PM, Chad Kellerman wrote:
> On Wed, Jan 12, 2011 at 9:01 AM, Frank Bonnet wrote:
>
> > Hello
> >
> > I'm in trouble with a simple shell script that give
> > erroneous value when running ...
> >
> > If I run commands interactively everything runs well
> >
> > > ps ax | grep slapd | grep -v grep | wc -l
> > 1
> >
> > If I run in the following shell script :
> >
> > #!/bin/sh
> > SD=0
> > SD=`ps -ax | grep slapd | grep -v grep | wc -l`
> > echo $SD
> >
> > the result is 3 !!!
> >
>
ps ax | grep "[/]slapd " | wc -l
may not fix the problem
but still cleaner
> >
> > Any info welcome !
> >
>
> What's the name of your script? Hope it's not slapd_check.sh that will
> cause and extra count in the ps, cus it will count itself.
>
>
> Chad
>
> >
> > ___
> > freebsd-questions@freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> > To unsubscribe, send any mail to "
> > freebsd-questions-unsubscr...@freebsd.org"
> >
>
>
>
> --
> A grasshopper walks into a bar and the bartender says "Hey, we have a drink
> named after you." And the grasshopper says "Really, You have a drink named
> Murray?"
> ___
> freebsd-questions@freebsd.org mailing list
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> To unsubscribe, send any mail to "
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--
Samuel Martín Moro
{EPITECH.} 2011
CamTrace S.A.S
"Nobody wants to say how this works.
Maybe nobody knows ..."
Xorg.conf(5)
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Re: problem with shell script
On Wed, Jan 12, 2011 at 9:01 AM, Frank Bonnet wrote: > Hello > > I'm in trouble with a simple shell script that give > erroneous value when running ... > > If I run commands interactively everything runs well > > > ps ax | grep slapd | grep -v grep | wc -l > 1 > > If I run in the following shell script : > > #!/bin/sh > SD=0 > SD=`ps -ax | grep slapd | grep -v grep | wc -l` > echo $SD > > the result is 3 !!! > > > Any info welcome ! > What's the name of your script? Hope it's not slapd_check.sh that will cause and extra count in the ps, cus it will count itself. Chad > > ___ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscr...@freebsd.org" > -- A grasshopper walks into a bar and the bartender says "Hey, we have a drink named after you." And the grasshopper says "Really, You have a drink named Murray?" ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
problem with shell script
Hello I'm in trouble with a simple shell script that give erroneous value when running ... If I run commands interactively everything runs well > ps ax | grep slapd | grep -v grep | wc -l 1 If I run in the following shell script : #!/bin/sh SD=0 SD=`ps -ax | grep slapd | grep -v grep | wc -l` echo $SD the result is 3 !!! Any info welcome ! ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
