Does your file spin off a child and then exit, so it creates a parallel situation. Sometimes you can stifle that by attaching all the child stdout and stderr until they close:
No sleep is necessary if they run one at a time.
In a korn shell script, how can I run several processes in parallel at the same time?
For example, I have 3 processes say p1, p2, p3
if I call them as
p1.ksh
p2.ksh
p3.ksh
they will run after one process finishes. But I want to run them in parallel and want to display "Process p1... (3 Replies)
Hi,
My server runnning on SUN Solaris rel.5.5.1. I have been facing this issues for years. I have some Xbase databases running on the server. User is using emulation software to telnet to server for accessing application. If user logout application abnormally - by closing windows session, then... (2 Replies)
Hi,
Would like to ask the experts if anyone knows how to run a script like this:
dtterm -title shell1
run process1 on shell1
dtterm -title shell2
run process2 on shell2
cheers!
p/s: sorry if i used the wrong forum, quite concussed after watching world cup for several nights; but I... (2 Replies)
I have the root password for my box, but I'm ignorant.
So, every time I start my computer, I have to run this command
/sbin/modprobe fuse
as su, so that I can do other stuff (like mount remote directories locally using sshfs)
I guess there's some file, like .bashrc, only it's applicable... (4 Replies)
This is my first post here so hello everyone! I know that a command of the programs name can start a program and clicking on a icon in GUI can as well as a startup shell script but how do I educate myself of the method that starts an application? Does the GUI run a script? What are the ways/ way... (2 Replies)
I would like to call a function called CIRCLE which is further beind called by other function but in a loop that CIRCLE fuction is being called. And this CIRCLE function starts another process which takes 3 hours to complete again, if i put that process in nohup &, I can go to the next command... (2 Replies)
Is there any limit in UNIX that only a MAXIMUM no of processes can run at a time? If so, it exceeds then what would be the error we would receive? (4 Replies)
Hello All,
Maybe I'm Missing something here but I have NOOO idea what the heck is going on with this....?
I have a Variable that contains a PATTERN of what I'm considering "Illegal Characters". So what I'm doing is looping
through a string containing some of these "Illegal Characters". Now... (5 Replies)
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: It's a shell script using a looping logic, trap, tput, if, while. Most of the scripts in this book aren't written... (2 Replies)
This is on a CentOS box, I have two scripts that need to run in order.
I want to write a shell script that calls the first script, lets it run and then terminates it after a certain number of hours (that I specify of course), and then calls the second script (they can't run simultaneously) which... (3 Replies)
Discussion started by: btramer
3 Replies
LEARN ABOUT OPENSOLARIS
halockrun
halockrun(1M) System Administration Commands halockrun(1M)NAME
halockrun - run a child program while holding a file lock
SYNOPSIS
/usr/cluster/bin/halockrun [-nsv] [-e exitcode] lockfilename
prog [args]
DESCRIPTION
The halockrun utility provides a convenient means to claim a file lock on a file and run a program while holding that lock. As this utility
supports script locking, this utility is useful when programming in scripting languages such as the Bourne shell. See sh(1).
halockrun opens the file lockfilename and claims an exclusive mode file lock on the entire file. See fcntl(2)fcntl(2)). Then it runs the
program prog with arguments args as a child process and waits for the child process to exit. When the child exits, halockrun releases the
lock, and exits with the same exit code with which the child exited.
The overall effect is that the child prog is run as a critical section, and that this critical section is well-formed, in that no matter
how the child terminates, the lock is released.
If the file lockfilename cannot be opened or created, then halockrun prints an error message on stderr and exits with exit code 99.
You can run this command in the global zone or in a non-global zone. The command affects only the global or non-global zone in which you
issue the command.
OPTIONS
The following options are supported:
-e exitcode Normally, errors detected by halockrun exit with exit code 99. The -e option provides a means to change this
special exit code to a different value.
-n The lock should be requested in non-blocking mode: if the lock cannot be granted immediately, halockrun exits
immediately, with exit code 1, without running prog. This behavior is not affected by the -e option.
Without the -n option, the lock is requested in blocking mode, thus, the halockrun utility blocks waiting for
the lock to become available.
-s Claim the file lock in shared mode, rather than in exclusive mode.
-v Verbose output, on stderr.
EXIT STATUS
Errors detected by halockrun itself, such that the child process was never started, cause halockrun to exit with exit code 99. (This exit
code value can be changed to a different value using the -e option. See OPTIONS.
Otherwise, halockrun exits with the same exit code with which the child exited.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscu |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
SEE ALSO fcntl(2), attributes(5)Sun Cluster 3.2 10 Apr 2006 halockrun(1M)