* extraneous 'I' in ps output
@ 2003-02-04 15:36 J.D. Laub
2003-02-04 16:02 ` Andrew M. Inggs
2003-02-04 23:09 ` extraneous 'I' in ps output (RESOLUTION) J.D. Laub
0 siblings, 2 replies; 6+ messages in thread
From: J.D. Laub @ 2003-02-04 15:36 UTC (permalink / raw)
To: cygwin
Here's a simple test case that shows the behavior I'm seeing:
$ dummy=`ps > /tmp/foo`
$ cat /tmp/foo
PID PPID PGID WINPID TTY UID STIME COMMAND
I 1268 1 1268 1268 con 12917 07:42:04 /usr/bin/bash
1388 1268 1268 1388 con 12917 07:42:19 /usr/bin/bash
1408 1388 1408 1332 con 12917 07:42:20 /usr/bin/ps
Anytime ps is called from command substitution, an 'I' gets
prepended to the line for the top shell.
I'm running install 2.249.2.5 on windoze2k which in running under
vmware hosted by deadrat8.0.
Due dilligence: I tried a fresh install of all of cygwin; same
results. Nothing jumping out from the FAQ. A search of the mail
archives on "ps" returned 0 hits (?!). There's no manpage for ps.
The online user guide doesn't mention that the floating 'I' should
be there. Google turned up nothing obvious. ps isn't in its own
package, and I can't find docs on where to look to find out in which
package it was delivered. procps looked promising, so I installed
source for it as well as gdb, make, and gcc, but the build fails
with 'TIOCGWINSZ undeclared'. Any other suggestions are most
welcome; I tend to prefer helping myself in an effort to minimizing
list noise, but I've run out of ideas.
--
J.D. Laub (Laubster) |"Your leg's too long / Your skull's too strong /
cygwin@laubster.org | Suppose your nose is wrong." - Renaldo & the Loaf
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: extraneous 'I' in ps output
2003-02-04 15:36 extraneous 'I' in ps output J.D. Laub
@ 2003-02-04 16:02 ` Andrew M. Inggs
2003-02-04 16:47 ` Ronald Landheer-Cieslak
2003-02-04 23:09 ` extraneous 'I' in ps output (RESOLUTION) J.D. Laub
1 sibling, 1 reply; 6+ messages in thread
From: Andrew M. Inggs @ 2003-02-04 16:02 UTC (permalink / raw)
To: cygwin
"J.D. Laub" <cygwin@laubster.org> wrote in message
news:<20030204154222.GA3915@aberdeen.fpcc.net>...
> Here's a simple test case that shows the behavior I'm seeing:
> $ dummy=`ps > /tmp/foo`
> $ cat /tmp/foo
> PID PPID PGID WINPID TTY UID STIME COMMAND
> I 1268 1 1268 1268 con 12917 07:42:04 /usr/bin/bash
> 1388 1268 1268 1388 con 12917 07:42:19 /usr/bin/bash
> 1408 1388 1408 1332 con 12917 07:42:20 /usr/bin/ps
>
> Anytime ps is called from command substitution, an 'I' gets
> prepended to the line for the top shell.
>
I see this too (cygwin-1.3.19-1).
> ps isn't in its own package, and I can't find docs on where to
> look to find out in which package it was delivered.
I can help you there, try <http://cygwin.com/packages/>. It
helps to narrow things down if you give a bit more than just
the filename, e.g., usr/bin/ps (note: no leading / though).
From here you'll see ps is in the cygwin package.
-- Andrew
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: extraneous 'I' in ps output
2003-02-04 16:02 ` Andrew M. Inggs
@ 2003-02-04 16:47 ` Ronald Landheer-Cieslak
2003-02-04 16:55 ` Christopher Faylor
0 siblings, 1 reply; 6+ messages in thread
From: Ronald Landheer-Cieslak @ 2003-02-04 16:47 UTC (permalink / raw)
To: Andrew M. Inggs; +Cc: cygwin
Hello all,
AFAICT, the I stands for "idle" and this is correct output. In any case,
it is the process status (have a look at the source - it is in the cygwin
package, under the winsup/utils directory (ps.cc) The ps is not entirely
OpenUnix or POSIX compliant (but I'm sure the maintainer (cgf?) will
gratefully accept patches) but AFAICT this is expected behaviour.
If this is posing a problem for one of your scripts, you might want to
consider making the script a bit sturdier :)
rlc
On Tue, 4 Feb 2003, Andrew M. Inggs wrote:
> "J.D. Laub" <cygwin@laubster.org> wrote in message
> news:<20030204154222.GA3915@aberdeen.fpcc.net>...
> > Here's a simple test case that shows the behavior I'm seeing:
> > $ dummy=`ps > /tmp/foo`
> > $ cat /tmp/foo
> > PID PPID PGID WINPID TTY UID STIME COMMAND
> > I 1268 1 1268 1268 con 12917 07:42:04 /usr/bin/bash
> > 1388 1268 1268 1388 con 12917 07:42:19 /usr/bin/bash
> > 1408 1388 1408 1332 con 12917 07:42:20 /usr/bin/ps
> >
> > Anytime ps is called from command substitution, an 'I' gets
> > prepended to the line for the top shell.
> >
> I see this too (cygwin-1.3.19-1).
>
> > ps isn't in its own package, and I can't find docs on where to
> > look to find out in which package it was delivered.
>
> I can help you there, try <http://cygwin.com/packages/>. It
> helps to narrow things down if you give a bit more than just
> the filename, e.g., usr/bin/ps (note: no leading / though).
> >From here you'll see ps is in the cygwin package.
>
> -- Andrew
>
>
>
>
> --
> Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
> Bug reporting: http://cygwin.com/bugs.html
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>
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: extraneous 'I' in ps output
2003-02-04 16:47 ` Ronald Landheer-Cieslak
@ 2003-02-04 16:55 ` Christopher Faylor
2003-02-04 17:09 ` Ronald Landheer-Cieslak
0 siblings, 1 reply; 6+ messages in thread
From: Christopher Faylor @ 2003-02-04 16:55 UTC (permalink / raw)
To: cygwin
On Tue, Feb 04, 2003 at 05:54:37PM +0100, Ronald Landheer-Cieslak wrote:
>AFAICT, the I stands for "idle" and this is correct output.
The "I' stands for input and it is correct output.
cgf
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: extraneous 'I' in ps output
2003-02-04 16:55 ` Christopher Faylor
@ 2003-02-04 17:09 ` Ronald Landheer-Cieslak
0 siblings, 0 replies; 6+ messages in thread
From: Ronald Landheer-Cieslak @ 2003-02-04 17:09 UTC (permalink / raw)
To: cygwin
On Tue, 4 Feb 2003, Christopher Faylor wrote:
> On Tue, Feb 04, 2003 at 05:54:37PM +0100, Ronald Landheer-Cieslak wrote:
> >AFAICT, the I stands for "idle" and this is correct output.
> The "I' stands for input and it is correct output.
Ah, I should have looked at the source a bit closer :)
thx
rlc
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: extraneous 'I' in ps output (RESOLUTION)
2003-02-04 15:36 extraneous 'I' in ps output J.D. Laub
2003-02-04 16:02 ` Andrew M. Inggs
@ 2003-02-04 23:09 ` J.D. Laub
1 sibling, 0 replies; 6+ messages in thread
From: J.D. Laub @ 2003-02-04 23:09 UTC (permalink / raw)
To: cygwin
On Tue, Feb 04, 2003 at 08:42:22AM -0700, J.D. Laub wrote:
> PID PPID PGID WINPID TTY UID STIME COMMAND
> I 1268 1 1268 1268 con 12917 07:42:04 /usr/bin/bash
> Anytime ps is called from command substitution, an 'I' gets
> prepended to the line for the top shell.
Thanks to Andrew for the pointer to the source, and to Ronald and
Christopher for their insight.
Inspection of the code shows ps is working as designed. There's an
undocumented column in the default ps output which indicates status.
The column has no header, and it may not always be populated. The
column can be suppressed by using either -f or the non-standard -s.
To find out what shell is currently running, I've changed my
.profile (which handles any of sh/zsh/bash/bash2/ksh on a half dozen
operating systems) from this:
shell=`ps | awk "{if ($$ == \\$1) print \\$NF}" \
| sed -e 's,.*/,,' -e 's,-,,'`
to this:
shell=`ps | sed 's/^[^0-9 ]*//' \
| awk "{if ($$ == \\$1) print \\$NF}" \
| sed -e 's,.*/,,' -e 's,-,,'`
--
J.D. Laub (Laubster) |"Your leg's too long / Your skull's too strong /
cygwin@laubster.org | Suppose your nose is wrong." - Renaldo & the Loaf
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2003-02-04 15:36 extraneous 'I' in ps output J.D. Laub
2003-02-04 16:02 ` Andrew M. Inggs
2003-02-04 16:47 ` Ronald Landheer-Cieslak
2003-02-04 16:55 ` Christopher Faylor
2003-02-04 17:09 ` Ronald Landheer-Cieslak
2003-02-04 23:09 ` extraneous 'I' in ps output (RESOLUTION) J.D. Laub
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