I have this script:
-------------------------------------------------------
#!/bin/ksh
#
if ] ||
]
then
echo "Executing main_load.sh script"
/usr1/psc_load/jobs/cron/main_load.sh "ods"
else
echo "File not found, do nothing"
fi
exit 0
... (4 Replies)
How do I make a shell script to see if a certain process is running.
The process shows up on ps aux as /usr/sbin/daemon
eg:
if
/usr/sbin/daemon
else
#nothin
basically i want to run the process if it isnt running/ has been stopped.
Thanks. (2 Replies)
Hi ,
I have a csh code below which check the process if it's running.
Can any expert advise me on the following:
1) what does this notationmean ">!" and how is it different from the append ">" notation ?
2) how does "setenv" work in this code ?
# Check whether there is a running... (3 Replies)
Hi
I would like to check if an instance of a script is already running.
I've seen many different examples, but I haven't the slightest idea as to how to do this.
Can you please help.
Thank you. (5 Replies)
How to I check if a process is running in C? I'm trying to use ps aux |grep "process name" but failing in doing that. How do I do that?
Thanks, (1 Reply)
Hi,
I check if the process is running or not using the below.
/usr/ucb/ps auxww | grep 109 |grep rmi | awk '{print $2}'
9718
Thus we see 9718 is the PID.
It return blank if the process is not running.
I need to perform some action if the process is not running and leave it if... (8 Replies)
I have process1 running on one machine and generating some log file. Now another process which can be launched on any machine wants to know if process1 is running or not and also in case it is running it wants to stream the logs file generated by process1 on terminal from which process2 is... (2 Replies)
I have run 10 instances of the process eg, process name is BG
nohup /WP01IRB1_irbapp/IRBWPROD/RB/bin/BG -c 1 -t 23 -a '-caTop TESTBILLCYCLE='5FEB13_81PT19NPT''>a.txt &
nohup /WP01IRB1_irbapp/IRBWPROD/RB/bin/BG -c 2 -t 23 -a '-caTop TESTBILLCYCLE='5FEB13_81PT19NPT''>b.txt &
nohup... (3 Replies)
Hi,
I want to write one program in C in Unix OS which will check the running status of a process time to time. If the process is stopped somehow by any means, it will ensure that the process is restarted and only one copy of the process image should run in memory at any point of time for the user.... (2 Replies)
At run time Without knowing job name how to check the job running in specific user "ABCD" ,If the running job duplicate more then 10 then script it self send alert message to the users with the process ID name so that will kill the processed to avoid hung issue ,tried below script please check and... (15 Replies)
Discussion started by: Kalia
15 Replies
LEARN ABOUT CENTOS
dotlockfile
DOTLOCKFILE(1) Cistron Utilities DOTLOCKFILE(1)NAME
dotlockfile - Utility to manage lockfiles
SYNOPSIS
/usr/bin/dotlockfile [-p] [-c] [-m] [-l|-u|-t] [-r retries] [lockfile]
DESCRIPTION
Dotlockfile is a command line utility to safely create, test and remove lockfiles. Lockfiles are created in an NFS-safe way. Dotlockfile
can can also be used to lock and unlock mailboxes even if the mailspool directory is only writable by group mail.
The name dotlockfile comes from the way mailboxes are locked for updates on a lot of UNIX systems. A lockfile is created with the same
filename as the mailbox but with the string ".lock" appended.
The names dotlock and lockfile were already taken - hence the name dotlockfile :).
OPTIONS -l Create a lockfile. This is the default.
-u Remove a lockfile.
-c Check for the existence of a valid lockfile.
-t Touch an existing lockfile (update the timestamp).
-p Write the process-id of the calling process into the lockfile. Also when testing for an existing lockfile, check the contents for a
process-id to find out if the lockfile is still valid.
-r retries
The number of times dotlockfile retries to acquire the lock if it failed the first time before giving up. The initial sleep after
failing to acquire the lock is 5 seconds. After each next try, a sleep of 5 seconds extra occurs up to a maximum sleep of 60 seconds
between tries. The default number of retries is 5.
-m Lock or unlock the current users mailbox. The path to the mailbox is the default system mailspool directory (usually /var/mail) with
the username as gotten from getpwuid() appended. If the environment variable $MAIL is set, that is used instead. Then the string
".lock" is appended to get the name of the actual lockfile.
lockfile
The lockfile to be created/removed, unless the -m option is in effect.
RETURN VALUE
Zero on success, and non-zero on failure. For the -c option, sucess means that a valid lockfile is already present. When locking (the
default, or the -l option) dotlockfile returns the same values as the library function lockfile_create(3). Unlocking a non-existant lock-
file is not an error.
NOTES
The lockfile is created exactly as named on the command line. The extension .lock is not automatically added.
This utility is a lot like the lockfile(1) utility included with procmail, and the mutt_dotlock(1) utility included with mutt. However the
command-line arguments differ, and so does the return status. It is believed that dotlockfile is the most flexible implementation, since it
automatically detects when it needs to use priviliges to lock a mailbox, and does it safely.
The above mentioned lockfile_create(3) manpage is present in the liblockfile-dev package.
BUGS
None known.
SEE ALSO lockfile_create(3), maillock(3)AUTHOR
Miquel van Smoorenburg, miquels@cistron.nl
15 May 2003 DOTLOCKFILE(1)