The process id (PID) is an integer assigned by the operating system at process creation time that uniquely identifies that process. On most operating systems, it's simply an incrementing counter; on OpenBSD, PID generation is randomized. Two processes cannot share a PID, but PID values may be reused. The PID does not change during the lifetime of a process. A different PID is a different process.
Quote:
Originally Posted by ss3944
By using the pid, Can I know which process it belongs to?
If you know the PID, you can use ps to find the process info.
How to change the modified time of a file to any specified time.
ls -ltr
drwxr-xr-x 2 pipe pipe 4096 Jun 10 10:33 coredump_06062008
----------------------------------------------------------------------
here file coredump_06062008 last modified time is Jun 10 10:33 and i... (1 Reply)
Hi all, I've written a script which collects some information and sendsout a mail.. (code pasted below)
ssh -l ora${sid} ${primaryhost} "tail -50 /oracle/$ORACLE_SID/newbackup/END_BACKUP.log" |grep 'insert' |tail -1| awk '{print $7}' >> ${RESULTFILE}
Output would look like this:... (1 Reply)
Hi all,
we have IBM- AIX 5.2 operating system on that we have our oracle production database and there is daily crontab script for backup. my boss told me to change the server time.if i change the server time by root user does it give problem to any application or script which are... (2 Replies)
Hi All,
I would like to change system time for my testing purposes. All I need is to change the system time forward/backward in seconds.
I am providing the perl code that I am using to change system time on all platforms.
---------
use strict;
use English;
my $sec; my $mday; my... (2 Replies)
hi
may aix version is 6100-06-03-1048
when i give date command it shows the time zone as
root@cbspsgui01 #date
Fri Sep 16 08:43:42 Africa/Johannesburg 2011
I want to change the time zone to GMT +02:00:
After i change the time zone it should show something like the one below when i type... (2 Replies)
Hi,
Below is my OS details.
uname -an
SunOS mymachine 5.10 Generic_144488-07 sun4v sparc SUNW,SPARC-Enterprise-T5220
I need to know when was my Apache server last started. Whats is the best and most reliable way to find out not just for Apache but for any PID per say?
I am... (16 Replies)
Hi !
I try to change a time-stamp hh:mm:ss allways to full ten-minutes.
example: 12:51:03 to 12:50:03
sed 's/::/:{0-5}0:/g' file.txt
but it will not work propperly, because the minute-decade will be replaced with the bracket-term {0-5}. Can someone please give me a hint?
Thanks in... (6 Replies)
Hi,
I am facing a problem with the command - TOUCH on Linux.
See the example below:
File on Linux: rw-rw-r-- user1 user1 Jan 01 09:00 test.txt
The file - test.txt was created by the user - user1.
Now, I want to change the date and time, but using other user - user2
The user2... (12 Replies)
Hi there!
I have a tricky problem concerning a nohup process:
I started a python2.7 script which loops over a function.
At the end it restarts the function. Due to a mistake I'm now having a never ending nohup process that I have to kill.
I started the program execution with:
>>nohup... (4 Replies)
Discussion started by: Lydia
4 Replies
LEARN ABOUT FREEBSD
dtruss
DTRUSS(1) BSD General Commands Manual DTRUSS(1)NAME
dtruss -- Trace system calls and userland stacks using DTrace
SYNOPSIS
dtruss [-acdefholLs] [-t syscall] [-n name -p pid command]
DESCRIPTION
The dtruss utility traces system calls and (optionally) userland stack traces for the specified programs.
The following options are available:
-p pid Trace the process with PID pid.
-n name
Trace the process with name name.
-t syscall
Trace the specified syscall only.
-a Print all details.
-c Print syscall counts.
-d Print relative times (in microseconds).
-e Print elapsed times (in microseconds).
-f Follow the children processes.
-l Force printing PID / TID.
-o Print time spent on CPU.
-s Print userland stack backtraces.
-L Don't print PID / TID.
-b bufsize
Specify the DTrace buffer size.
EXIT STATUS
The dtruss utility exits 0 on success, and >0 if an error occurs.
SEE ALSO dtrace(1)HISTORY
The dtruss utility comes from the DTraceToolkit and was first imported into FreeBSD 9.0.
AUTHORS
Brendan Gregg
BSD August 26, 2010 BSD