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Re: ps under FreeBSD

From: "Yuri A. Kabaenkov" <sec () artofit com>
Date: Sat, 18 May 2002 23:50:03 +0400
Hello Jakub,

Saturday, May 18, 2002, 10:40:38 PM, you wrote:

There is another bug with this sysctl variable.
For example to see all processess with kern.ps_showallprocs=0 you can do this:

$ cd /proc;
$ for i in `ls`;do cat $i/cmdline;echo;done
/sbin/init--
/bin/sh/usr/local/bin/svscanboot
svscan/service
readproctitle
supervisepop3
superviselog
supervisesend
superviselog
supervisesmtp
superviselog
supervisednscache
superviselog
supervisetinydns
superviselog
superviseaxfrdns
superviselog
mysqld
/usr/local/bin/multilogt/var/log/qmail/pop3d
/usr/local/bin/tinydns
/usr/local/bin/tcpserver-D-H-R-x/home/vpopmail/etc/tcp.smtp.cdb-c25-u9002-g90010smtp/var/qmail/bin/qmail-smtpd
qmail-send
/usr/local/bin/multilogts1000000n20/var/log/qmail/send
/usr/local/bin/tcpserver-D-R-H-l00110/var/qmail/bin/qmail-popupmyhost.com/home/vpopmail/bin/vchkpw/var/qmail/bin/qmail-pop3dMaildir
/usr/local/bin/multilogt/var/log/qmail/smtp
/usr/local/bin/dnscache
multilogt./main
tcpserver-vDRHl0-xtcp.cdb--127.0.0.153/usr/local/bin/axfrdns
sploggerqmail
qmail-lspawn./Mailbox
qmail-rspawn
qmail-clean
multilogt./main
multilogt./main
/usr/local/pgsql/bin/postmaster-D/usr/local/pgsql/data-i-N512-B1024-F
/usr/local/sbin/snmpd-c/usr/local/share/snmp/snmpd.conf-usnmpd-gsnmpd
/usr/bin/perl/usr/local/bin/mrtg--user=dialer--group=dialer/home/dialer/mrtg.conf
/usr/libexec/gettyPcttyv0
/usr/libexec/gettyPcttyv1
/usr/libexec/gettyPcttyv2
/usr/libexec/gettyPcttyv3
/usr/libexec/gettyPcttyv4
/usr/libexec/gettyPcttyv5
/usr/libexec/gettyPcttyv6
/usr/libexec/gettyPcttyv7
pagedaemon
adjkerntz-i
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
vmdaemon
sshd: root@ttyp0
-bash
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
sshhellman@localhost
sshd: hellman@ttyp1
-bash
bufdaemon
/usr/local/apache/bin/httpd
syncer
postmaster: stats buffer process   
postmaster: stats collector process   
vnlrur
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
/usr/sbin/cron
/usr/local/apache/bin/httpd
/usr/local/apache/bin/httpd
cat: 7572/cmdline: No such file or directory

/usr/local/sbin/sshd
/usr/libexec/ftpd-D-t1800-l-l
/bin/sh/usr/local/mysql/bin/safe_mysqld--log-slow-queries--user=mysql--default-character-set=win1251--skip-name-resolve--set-variablemax_connections=5000
catcurproc/cmdline


---------
here you are :)



JF> Hi,
JF> I was playing with ps on FreeBSD with kern.ps_showallprocs=0 and I was
JF> surprised when I have seen that I may see info about running process, if I
JF> know it's ID

JF> sirat@fremen:ttyp3:~> ps -u5710
JF> USER    PID %CPU %MEM   VSZ  RSS  TT  STAT STARTED      TIME COMMAND
JF> seeba  5710  0,0  0,0  1388    0  p6  IWsJ -         0:00,00 -tcsh (tcsh)

JF> I may see also root's processes:
JF> sirat@fremen:ttyp3:~> ps -u205
JF> USER   PID %CPU %MEM   VSZ  RSS  TT  STAT STARTED      TIME COMMAND
JF> root   205  0,0  0,1  2064  264  ??  IsJ   9:23     0:00,05 /usr/sbin/sshd


JF> and ps axu gives:
JF> sirat@fremen:ttyp3:~> ps axu
JF> USER    PID %CPU %MEM   VSZ  RSS  TT  STAT STARTED      TIME COMMAND
JF> sirat 40384  0,0  0,1   428  272  p3  R+J  18:53     0:00,00 ps axu
JF> root    515  0,0  0,3  1744  600  ??  SsJ   9:26     0:19,97 screen
JF> sirat   516  0,0  0,0  1404    0  p2  IWsJ -         0:00,00 /bin/tcsh
JF> sirat   519  0,0  0,9  3996 1672  p2  S+J   9:26     0:51,67
JF> /usr/local/bin/irs
JF> sirat   588  0,0  0,5  1396  860  p0  IsJ   9:32     0:00,83 -tcsh (tcsh)
JF> sirat  1467  0,0  0,4  1400  844  p3  SsJ   9:37     0:00,52 -tcsh (tcsh)
JF> sirat  2183  0,0  0,0  1400    0  p5  IWs+J -         0:00,00 -tcsh (tcsh)
JF> sirat  4491  0,0  0,1  1604  124  p1  S+J  13:59     0:00,13 screen -r
JF> sirat 40359  0,0  0,9  2676 1660  p0  I+J  18:51     0:00,07 mutt
JF> sirat 40365  0,0  0,2   648  448  p0  I+J  18:51     0:00,01 sh -c joe '/home/s
JF> sirat 40366  0,0  0,5  1316  900  p0  S+J  18:51     0:00,12 joe /home/sirat/tm
JF> sirat   467  0,0  0,0  1396    0  p1  IWsJ -         0:00,00 -tcsh (tcsh)

JF> I think it may be seen as bug. What do You think?

JF> P.S. I have FreeBSD 4.6-PRERELEASE #0 and I checked it also on 4.5-STABLE
JF> P.P.S. It works like that: ps -<argument><pid> and the argument isn't needed




-- 
Best regards,
 Yuri                            mailto:sec () artofit com
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