Shell Programming and Scripting

In the Find command you have mtine , ctime and atime ... I used the command long back , will try and tel u

No,you can

Code:

stat /proc/pid

then you can find the STIME..Right?
we just need to check /proc/"[0-9]{1,}" folder
Then we can determine which process match...

---------- Post updated at 02:47 AM ---------- Previous update was at 02:40 AM ----------


Oh yes,we can use find them

just /proc/pid folder

---------- Post updated at 03:02 AM ---------- Previous update was at 02:47 AM ----------

Code:

for i in `find /proc/"^[0-9]\{1,\}" -maxdepth 1 -mindepth 1 -type d  -mtime +3 2>/dev/null | awk -F"/" '{print $3}' ; do ps -af -p $i ; done

find command to list the old processes...interesting! can u plz brief what exactly this command line is doing ?

Code:

for i in `find /proc/"^[0-9]\{1,\}" -maxdepth 1 -mindepth 1 -type d  -mtime +3 2>/dev/null | awk -F"/" '{print $3}' `; do ps -af -p $i ; done

As far as I recall, HP-UX does not have a /proc filesystem.

I don't why I can't run the command now ,maybe my shell changed...It doesn't matter..

So the command is not very good . we use a script.

First we find out the pid of process that has running in the system for more than 3 days.

Code:

find /proc -maxdepth 1 -mindepth 1 -type d -mtime +1 2>/dev/null| egrep -v /proc/[a-Z]  | awk -F"/" '{print $3}'  | tee /tmp/a

Second we can find which process with pid.

Code:

while read pid 
do
ps -p $pid -o stat,euid,ruid,tty,tpgid,sess,pgrp,ppid,pid,pcpu,comm  # you can modify it to get what you want...
done < /tmp/a

FYI:
[root@unix proc]# ps -p 4062 -o stat,euid,ruid,tty,tpgid,sess,pgrp,ppid,pid,pcpu,comm
STAT EUID RUID TT TPGID SESS PGRP PPID PID %CPU COMMAND
Ss+ 0 0 tty2 4062 4062 4062 1 4062 0.0 mingetty

---------- Post updated at 09:11 AM ---------- Previous update was at 09:07 AM ----------

Oh no, so we can't use /proc ...

---------- Post updated at 09:28 AM ---------- Previous update was at 09:11 AM ----------

so can we use this option of ps below ?

bsdstart START time the command started. If the process was started less
than 24 hours ago, the output format is " HH:MM", else it
is "mmm dd" (where mmm is the three letters of the month).

[root@unix proc]# ps -ea -o bsdstart,comm,pid | head
START COMMAND PID
18:41 init 1
18:41 migration/0 2
18:41 ksoftirqd/0 3
18:41 watchdog/0 4
18:41 events/0 5
18:41 khelper 6
18:41 kthread 7
18:41 kblockd/0 10
18:41 kacpid 11

So we need to determine the start-time;

HH -gt 70 ?

Then we can say the process is three days old.

An earlier poster asked for ideas which would work with standard HP-UX commands.

We can get the elapsed time accurately from the alternative format of "ps".

For example:

Code:

UNIX95= ps -uusername -o etime,comm,pid

(Note the "comm" parameter must not be "command" in HP-UX).

However the "ELAPSED" column is fiddly to process because it is in three possible formats according to how long the elapsed time is.

<space><space><space>MM:SS

HH:MM:SS

D-HH:MM:SS
(Where D=days with no leading zeros)

The hyphen between days and hours is going to be handy because we can immediately eliminate processes which are less than a day old. Depending on the accuracy required for "3 days old" we could just use the days field or use it with the HH:MM:SS fields to create an elapsed time in any units.

Thanks all for the feedback. I will try the options and will reply.