|
|
Sponsored Content
Top Forums
Shell Programming and Scripting
if pid exist ?
Post 302445823 by rdcwayx on Tuesday 17th of August 2010 02:51:24 AM
08-17-2010
|
|
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Is there a jumpstart equivalent tool in the linux environment? (1 Reply)
Discussion started by: pbonilla
1 Replies
2. Programming
question: for the below program
i just printed the value for pid, child pid and parent pid
why does it give me 6 values? i assume ppid is 28086
but can't figure out why there are 5 values printed instead of just two!
can someone comment on that!
#include<stdio.h>
#define DIM 8
int... (3 Replies)
Discussion started by: a25khan
3 Replies
3. UNIX for Dummies Questions & Answers
1. If I use an software application(which connects to the database in the server) in my local pc, how many PID should be registered? Would there be PID for the session and another PID for socket connection?
2. I noticed (through netstat) that when I logged in using the my software application,... (1 Reply)
Discussion started by: pcx26
1 Replies
4. Shell Programming and Scripting
Hi All,
In my project i have two process runs in the back end.
Once i start my project, and execute the command ps, i get below output:
PID TTY TIME CMD
9086 pts/1 0:00 ksh
9241 pts/1 0:02 java
9240 pts/1 0:00 shell_script_bg
java with 9241 PID is the main... (4 Replies)
Discussion started by: rkrgarlapati
4 Replies
5. UNIX for Dummies Questions & Answers
somehow my user names and groups on one of our machines are changed to numbers 700, 701, etc.
thus, i can only ssh into this machine as root.
is there a way to migrate the user names and groups to this machine?
thanks! (3 Replies)
Discussion started by: user23
3 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I need to get the pid of a process and have to store the pid in a variable and i want to use this value(pid) of the variable for some process. Please can anyone tell me how to get the pid of a process and store it in a variable. please help me on this.
Thanks in advance,
Amudha (7 Replies)
Discussion started by: samudha
7 Replies
7. Shell Programming and Scripting
Hi, I am making a program that needs to detect if the program name in parameter is a valid runable program.
But the line if ; then never seem to work.
Even if I run like:
./script cat "-u" cat "-u" inputfile
Thank you everyone.
#!/bin/bash
#
usage() { #print usage message and quit... (4 Replies)
Discussion started by: leonmerc
4 Replies
8. UNIX for Dummies Questions & Answers
I have this code in tcsh and would like to know whether the syntax below will work in csh.
if( "${%rsl}" == 0 ) then
echo "rsl is empty"
endif
---------- Post updated at 06:38 AM ---------- Previous update was at 05:53 AM ----------
It does not seem so. Perhaps the best thing is to... (2 Replies)
Discussion started by: kristinu
2 Replies
9. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
I'm able to create a group but when I'm trying to delete the group it keeps stating Group Doesn't Exist. I know... (2 Replies)
Discussion started by: GoBoyGo
2 Replies
10. UNIX for Beginners Questions & Answers
I am really confused as to why a tool like fakechroot exists and what does it do.
Chroot is an ability only for root users, correct? Then a tool that allows to bypass that is clearly a security flaw, correct?
When and why would you need something like this?
Is there any relation between... (7 Replies)
Discussion started by: sreyan32
7 Replies
LEARN ABOUT LINUX
pidof
PIDOF(8) Linux System Administrator's Manual PIDOF(8) NAME
pidof -- find the process ID of a running program. SYNOPSIS
pidof [-s] [-c] [-n] [-x] [-o omitpid[,omitpid..]] [-o omitpid[,omitpid..]..] program [program..] DESCRIPTION
Pidof finds the process id's (pids) of the named programs. It prints those id's on the standard output. This program is on some systems used in run-level change scripts, especially when the system has a System-V like rc structure. In that case these scripts are located in /etc/rc?.d, where ? is the runlevel. If the system has a start-stop-daemon (8) program that should be used instead. OPTIONS
-s Single shot - this instructs the program to only return one pid. -c Only return process ids that are running with the same root directory. This option is ignored for non-root users, as they will be unable to check the current root directory of processes they do not own. -n Avoid stat(2) system function call on all binaries which are located on network based file systems like NFS. Instead of using this option the the variable PIDOF_NETFS may be set and exported. -x Scripts too - this causes the program to also return process id's of shells running the named scripts. -o omitpid Tells pidof to omit processes with that process id. The special pid %PPID can be used to name the parent process of the pidof pro- gram, in other words the calling shell or shell script. EXIT STATUS
0 At least one program was found with the requested name. 1 No program was found with the requested name. NOTES
pidof is actually the same program as killall5; the program behaves according to the name under which it is called. When pidof is invoked with a full pathname to the program it should find the pid of, it is reasonably safe. Otherwise it is possible that it returns pids of running programs that happen to have the same name as the program you're after but are actually other programs. Note that that the executable name of running processes is calculated with readlink(2), so symbolic links to executables will also match. SEE ALSO
shutdown(8), init(8), halt(8), reboot(8), killall5(8) AUTHOR
Miquel van Smoorenburg, miquels@cistron.nl 01 Sep 1998 PIDOF(8)