02-12-2007
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hi folks
can any suggest me how to get a parent processid in the script if i am executing this in the script
vi myscript.sh
echo "parent shell pid"$$
sh myscript.sh
but when i am executing this i am getting a new pid(actually that is the child pid) whenever i am executing this... (4 Replies)
Discussion started by: maheshwin
4 Replies
2. UNIX for Dummies Questions & Answers
Hi,
I am using bash and need to run a set of tcsh scripts that set environment variables. Is there a way to do this? Any help greatly appreciated. (3 Replies)
Discussion started by: konndanley
3 Replies
3. Shell Programming and Scripting
hi experts(novice people can stay away as it is no child's game),
i am developing a script which works like recycle bin of windows.
the problem i am facing is that when ever i am trying to delete a file which is situated in parent directory or parent's parent directory i am unable to... (1 Reply)
Discussion started by: yahoo!
1 Replies
4. 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
5. Shell Programming and Scripting
The below shell script obtains a command and an alias from the user then appends the alias to the users ~/.aliases file. It is useful with cd commands and saves typing; instead of going cd /foo/bar/bonk/boo/what/whatelse/dir I create an alias something like "godir".
It's not done and I will... (2 Replies)
Discussion started by: whosit1963
2 Replies
6. Shell Programming and Scripting
hi all,
for an example:
$ ps -ef | grep apache | awk '{ print $2, $3 }'
24073 11784
28021 1
28022 1
28038 1
28041 28040
28045 28041
28047 28041
28040 1
28049 28041
28051 28041
28053 28041
28030 1
28054 28041
28055 28041
28056 28041
28057 28041 (5 Replies)
Discussion started by: raghur77
5 Replies
7. Shell Programming and Scripting
Hi All,
I need to get the PID of a process which i ran in background into a variable
echo $! gives me the PID of last background process but how to get this into a variable so that i can use "wait" command later in the script to make sure that this background process was done
var = `echo... (5 Replies)
Discussion started by: firestar
5 Replies
8. Shell Programming and Scripting
I'm trying to make a sed substitution where the substitution pattern is an environment variable to be expanded, but the variable contains a "slash".
sed -e 's/<HOME_DIRECTORY>/'$HOME'/'This gives me the following error:
sed: -e expression #1, char 21: unknown option to `s'Obviously this is... (2 Replies)
Discussion started by: Ilja
2 Replies
9. Shell Programming and Scripting
A not-too-ugly solution to this classic problem...
#!/bin/bash
mknod fifo p
(
echo 'value' > fifo &
)
VARIABLE=`cat fifo`
rm fifo
Whatdcha think? Good? No good? (9 Replies)
Discussion started by: vomv1988
9 Replies
10. Shell Programming and Scripting
Hi,
I am using this command fuser_result=`fuser -f /web/$1/admin-*/logs/access` to get the parent pid of the process.
However, The output differs and at times it shows two pids instead of one thus failing the logic of my script. See output below:
bash-3.2$ fuser -f... (3 Replies)
Discussion started by: mohtashims
3 Replies
LEARN ABOUT XFREE86
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)