08-17-2010
If you are using ksh, then the wait command without any options will wait until all asynch jobs have completed.
From the ksh manual page:
wait [ job . . . ]
Wait for the specified job and report its termination status. If job is not given, then all currently active child processes are waited for. The exit status from this command is that of the last process waited for if job is specified; otherwise it is zero. See Jobs for a description of the format of job.
The whole page is at:
Kshell Man Page
Bash's wait command operates in a similar fashion, however the return status from is very different than in Kshell, so if you are using bash, make sure you understand what it returns.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have a sript which is going to trigger other 3 scripts in background simultaneously
for eg:
Main Script:(main.sh)
-----------
sh a.sh &
sh b.sh &
sh c.sh &
How to catch the exit status and store it in a variable for all those three scripts in main script. Is there any other way of... (4 Replies)
Discussion started by: Omkumar
4 Replies
2. Shell Programming and Scripting
How can I run a shell in the background?
cat test.sh
#!/bin/sh
sleep 600
Thank u very much indeed! (2 Replies)
Discussion started by: GCTEII
2 Replies
3. UNIX for Dummies Questions & Answers
Hi,
I was trying to run ssh2 command in background... but i got follwoing error message saying that process has been stopped..
+ Stopped(SIGTTOU)
Anyone have any idea about this??? Appreciated your help.. (3 Replies)
Discussion started by: pvamsikr
3 Replies
4. Shell Programming and Scripting
Hi,
I have a script that polls a directory using inotifywait. This script is always running in the background. Within that script, I have 2 commands that need to run simultaneously. When those scripts are finished, I have to fire off a 3rd. The problem is, the 3rd script is never being... (0 Replies)
Discussion started by: gseyforth
0 Replies
5. Shell Programming and Scripting
Hello everybody,
I'm making a script for running a .bat process on wineconsole, but I want that wineconsole doesn't show up when I call it from the script.
The script is named "reset" and it looks like this:
When I execute it, it will show up the wineconsole window on top, and that is... (3 Replies)
Discussion started by: taurokpo
3 Replies
6. UNIX for Dummies Questions & Answers
I am from MQ/MB technology. My requirement is to display the queue manger and broker status on daily basis.
If I manually run the script, it works fine and displays output. But when I have scheduled the same using cronjobs it shows only the queue manger status and not the broker status.
Can... (3 Replies)
Discussion started by: Anusha M
3 Replies
7. Shell Programming and Scripting
Hi, below is my master script wihch inturn runs 2 scripts in background
#master_script.sh
./subscript1.sh &
./subscript2.sh &
executed the master_script.sh from unix command prompt
$ ./master_script.sh
it is executing the subscripts and they are completing fine, however master_script.sh is... (2 Replies)
Discussion started by: JSKOBS
2 Replies
8. Shell Programming and Scripting
Hi
Could someone offer some help on this problem I've got with running a background process.
As part of a script that does a stop/start/status for a piece of software called SAS, the following extract is from part of the start step.
My issue is that when the script is run, the control... (0 Replies)
Discussion started by: GavP
0 Replies
9. Shell Programming and Scripting
Hi ,
I have prepared the following shell script to run the hqls in background.
These scripts are running Parallel but I want to run the hqls sequentially in background.
cat >cc_script.ksh
nohup hive -hiveconf rrdt=2016-06-12 -f /home/files/cust1.hql > home/log/cust1.log 2>&1 &
nohup hive... (6 Replies)
Discussion started by: ROCK_PLSQL
6 Replies
10. Shell Programming and Scripting
Hello all,
Can someone help with one script?
I have as example 3 scripts
1.sh
sleep 60 &
sleep 60 &
sleep 10 &
sleep 80 &
sleep 60 &
2.sh
sleep 40 &
sleep 5 &
sleep 10 &
sleep 70 &
sleep 60 &
3.sh (2 Replies)
Discussion started by: vikus
2 Replies
LEARN ABOUT HPUX
secure_sid_scripts
secure_sid_scripts(5) File Formats Manual secure_sid_scripts(5)
NAME
secure_sid_scripts - controls whether setuid and setgid bits on scripts are honored
VALUES
Failsafe
Default
Allowed values
Recommended values
DESCRIPTION
This tunable controls whether and bits on executable scripts have any effect. Honoring on scripts make a system vulnerable to attack by
malicious users.
The default value for this variable is 1, indicating that bits are to be ignored by the execve(2) system call for higher security. The
tunable can be set to 0 for a compatibility with older releases at the expense of security. Hewlett-Packard strongly recommends that you
not change the value of this tunable unless there is an urgent need to do so.
When a script with bits is executed, the kernel generates the following error message to both the terminal controlling and the system log.
(To view the error message, use dmesg(1M) or inspect
Who is Expected to Change This Tunable?
Administrator.
Restrictions on Changing
Changes to this tunable take effect for new scripts started after the change.
When Should the Value of This Tunable Be Changed?
This tunable controls operational modes rather than data structure sizes and limits. The appropriate setting for a system depends on
whether you consider security or compatibility to be most important.
A value of is compatible with previous releases of HP-UX, but it is also less secure.
A value of provides security against race condition attacks exploiting scripts.
What Are the Side Effects of Changing the Value
This tunable controls only executable scripts (not programs) with bit set. HP-UX does not ship with any such scripts. If the customer
wishes to use scripts, third party applications such as or can be used. Alternatively, the shell script can be wrapped in a simple C pro-
gram that runs the shell script with appropriate permissions:
What Other Tunable Values Should Be Changed at the Same Time?
None.
WARNINGS
None. All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its meaning changed in future
releases of HP-UX.
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun-
able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was
factory installed on your system, see at
FILES
AUTHOR
was developed by HP.
SEE ALSO
chmod(1), execve(2), kctune(1M).
Tunable Kernel Parameters secure_sid_scripts(5)