If I understand vivek right (although the "like return in C" confuses me) the variables of the child should be visible to the parent, not vice versa, so the child script has to be sourced. The syntax for ksh/bash would be a dot and space prefixing the scriptname when its called:
Edit: well, i was slow, but export is not needed here. It's used to put the variable into the environment a subshell inherts. Sourcing was the important part...
Dear Friends,
Please help me to achieve the following:
I want to pass one parameter from Shell-script to Sql-script.
Example:
My ShellScript.sh is calling report.sql like this:
/bin/sqlplus /reports.sql
And
My report.sql is calling many Stored-Procedures like this:
exec... (0 Replies)
Hi,
When I invoke a script s1.sh it will call an another script s2.sh by itself. This script s2.sh will call some java files, so while running the script it asks for a file name to be processed. Which we can see in the screen.
The file name to be processed is present in script s1.sh
Now... (1 Reply)
Hi,
When I invoke a script s1.sh it will call an another script s2.sh by itself. This script s2.sh will call some java files, so while running the script it asks for a file name to be processed. Which we can see in the screen.
The file name to be processed is present in script s1.sh
Now I... (2 Replies)
How do i get the value of the variable from the called script(script2) to the calling script(script1) in ksh ?
I've given portion of the script here to explain the problem.
Portion of Script 1
=============
-----
-----
tmp=`a.ksh p1 p2 p3`
if then
# error processing
fi
-----... (10 Replies)
I want to call script2 from script1 passing parameters. I want to read the parameters list in script1, check the local directory (for example - lpath1|lpath2|lpath3|lpath4|lpath5|) for the existance of files and set the` lcount` to the number of files in this folder (`... (2 Replies)
I have a shell script main.sh which inturn call the python script ofdm.py, I want to pass two variables from shell script to python script for its execution. How do i achieve this ?????
Eg:
main.sh
a=3 b=3;
c= a+b
exec python ofdm.py
ofdm.py
d=c+a
Thanks in Anticipation (4 Replies)
I have an for loop that reads the following file
cat param.cfg
val1:env1:opt1
val2:env2:opt2
val3:env3:opt3
val4:env4:opt4
.
.
The for loop extracts the each line of the file so that at any one point, the value of i is
val1:env1:opt1 etc...
I would like to extract each... (19 Replies)
I have a shell script (.sh) and I want to pass a parameter value to the awk command but I am getting exception, please assist.
diff=$1$2.diff
id=$2 new=new_$diff
echo "My id is $1"
echo "I want to sync for user account $id"
##awk command I am using is as below
cat $diff |... (1 Reply)
Hi all,
Warm regards!
I am in a difficult situation here. I have been trying to create a shell script which calls another shell script inside. Here is a simplified version of the same.
Calling Script.
#!/bin/ksh
# want to run as a different process... (6 Replies)
I'm trying to automatically pass user input values into a script that is being called from another script, below is my current script and I added a comment next to the script where it asks user to enter input value.
Thanks,
mbak
#!/bin/ksh
echo " Adding disks for DB server then Enter YES... (2 Replies)
Discussion started by: mbak
2 Replies
LEARN ABOUT BSD
pthread_atfork
PTHREAD_ATFORK(3) Library Functions Manual PTHREAD_ATFORK(3)NAME
pthread_atfork - register handlers to be called at fork(2) time
SYNOPSIS
#include <pthread.h>
int pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void));
DESCRIPTION
pthread_atfork registers handler functions to be called just before and just after a new process is created with fork(2). The prepare han-
dler will be called from the parent process, just before the new process is created. The parent handler will be called from the parent
process, just before fork(2) returns. The child handler will be called from the child process, just before fork(2) returns.
One or several of the three handlers prepare, parent and child can be given as NULL, meaning that no handler needs to be called at the cor-
responding point.
pthread_atfork can be called several times to install several sets of handlers. At fork(2) time, the prepare handlers are called in LIFO
order (last added with pthread_atfork, first called before fork), while the parent and child handlers are called in FIFO order (first
added, first called).
To understand the purpose of pthread_atfork, recall that fork(2) duplicates the whole memory space, including mutexes in their current
locking state, but only the calling thread: other threads are not running in the child process. The mutexes are not usable after the fork
and must be initialized with pthread_mutex_init in the child process. This is a limitation of the current implementation and might or
might not be present in future versions.
RETURN VALUE
pthread_atfork returns 0 on success and a non-zero error code on error.
ERRORS
ENOMEM insufficient memory available to register the handlers.
AUTHOR
Xavier Leroy <Xavier.Leroy@inria.fr>
SEE ALSO fork(2), pthread_mutex_lock(3), pthread_mutex_unlock(3).
LinuxThreads PTHREAD_ATFORK(3)