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Top Forums Shell Programming and Scripting Get PID of a process into a variable Post 302444364 by firestar on Wednesday 11th of August 2010 05:04:22 PM
Old 08-11-2010
Get PID of a process into a variable

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

Code:
var = `echo $!`
echo $var

this is not working Smilie

could some body please help
thanks in advance
firestar

Last edited by Scott; 08-11-2010 at 06:08 PM.. Reason: Please use code tags
 

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PLDD(1) 							 Linux User Manual							   PLDD(1)

NAME
pldd - display dynamic shared objects linked into a process SYNOPSIS
pldd PID pldd OPTION DESCRIPTION
The pldd command displays a list of the dynamic shared objects that are linked into the process with the specified process ID. The list includes the libraries that have been dynamically loaded using dlopen(3). OPTIONS
-?, --help Display program help message. --usage Display a short usage message. -V, --version Display the program version. VERSIONS
pldd is available since glibc 2.15. CONFORMING TO
The pldd command is not specified by POSIX.1. Some other systems have a similar command. EXIT STATUS
On success, pldd exits with the status 0. If the specified process does not exist, the user does not have permission to access its dynamic shared object list, or no command-line arguments are supplied, pldd exists with a status of 1. If given an invalid option, it exits with the status 64. EXAMPLE
$ echo $$ # Display PID of shell 1143 $ pldd $$ # Display DSOs linked into the shell 1143: /usr/bin/bash linux-vdso.so.1 /lib64/libtinfo.so.5 /lib64/libdl.so.2 /lib64/libc.so.6 /lib64/ld-linux-x86-64.so.2 /lib64/libnss_files.so.2 NOTES
The command lsof -p PID also shows output that includes the dynamic shared objects that are linked into a process. SEE ALSO
ldd(1), lsof(1), dlopen(3), ld.so(8) GNU
2014-09-27 PLDD(1)
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