I would like to allow only one instance of a script to run at any moment.
I've tried the following solution to count the instances but the result is always the number of running instances plus one and I can't find the problem
ps -ef | grep $0 | sed '/^$/ d' | sed '/grep/ d' | wc -l
Please... (2 Replies)
Hello,
I'm trying to write a script that checks for previous instances of the same script which may still be running (this script is scheduled to run every 30 minutes). I want to somehow use the pid from each instance to make sure the previous one isn't running before continuing with my... (5 Replies)
Sorry for all the threads. I am almost done. I ahve a bash script that is launching a diags program then copying the .html over my client. then it does the following line
/opt/firefox/firefox report.html
it launches it fines but the program waits for me to close the window or kill the script.... (2 Replies)
Is there a way to monitor certain processes and if they hang too long to kill them, but certain scripts which are expected to take a long time to let them go?
Thank you
Richard (4 Replies)
I have a parent process which will start 36 child process. This I achieved by using the 'for loop'.
In Parent.sh:-
./Child.sh <arg1> <arg2> ... &
If I execute "ps -ef | grep Child.sh", I can see 72 child processes running at the background. I mean I can see the duplicate of each process.
... (2 Replies)
I had issues with processes locking up. This script checks for processes and kills them if they are older than a certain time.
Its uses some functions you'll need to define or remove, like slog() which I use for logging, and is_running() which checks if this script is already running so you can... (0 Replies)
Hello to all @here,
as Iīm new to this forum, I will try to start in a easy way for my first post. Iīm not beginner in scripting, but also not a proffessional. So please keep easy, if I donīt understand your explanation at once ;) I donīt mean it in a bad way!
Here is the Problem:
There were... (2 Replies)
Hi there,
I'm trying to run a script remotely on a server in a particular directory named after hostname which already exists, my login session gets killed as soon as I run the below command. Not sure what is wrong, is there a better way to do it ?
Note: I can also use nohup command to run... (14 Replies)
Discussion started by: mbak
14 Replies
LEARN ABOUT FREEBSD
atf-sh
ATF-SH(1) BSD General Commands Manual ATF-SH(1)NAME
atf-sh [-s shell] -- interpreter for shell-based test programs
SYNOPSIS
atf-sh script
DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library.
atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter-
preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not
use any non-standard extensions.
The following options are available:
-s shell Specifies the shell to use instead of the value provided by ATF_SHELL.
ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes.
ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes.
ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a
specific interpreter.
EXAMPLES
Scripts using atf-sh(3) should start with:
#! /usr/bin/env atf-sh
Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode
the path to atf-sh in the script and then use the -s option afterwards as a single parameter:
#! /path/to/bin/atf-sh -s/bin/bash
ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts.
SEE ALSO atf-sh(3)BSD September 27, 2014 BSD