I am running an Ubuntu Gutsy laptop with Advanced Compiz fusion options enabled. I am using xdotool to simulate keyboard input in order to rotate through multiple desktops.
I am looking for a way to kill a while true loop when the Enter key (or Control+C if it is easier) is pushed when the... (2 Replies)
All,
I'm having a problem w/this function. Specifically, I want to call another function (get_stats) when the process in the else completes (the initial if and the elsif seem to work fine). But what's happening is the get_stats function call is running after the else runs only once, NOT when it... (8 Replies)
Greeting,
The following script completes after reading only one record from the input file that contains many records. I commented out the "ssh" and get what I expect, an echo of all the records in the input.txt file. Is ssh killing the file handle?
On the box "uname -a" gives "SunOS... (2 Replies)
Hi my code looks like:
if test $STEP -le 10
then
.
.
ls -1d AM*-OUT|while read MYDIR
do
cd $MYDIR
ls |tail -n1| while read MYFILE
do
.
.
if test -s $MYFILE
then
sqlldr ....
rc=$?
if test $rc -ne 0 (3 Replies)
Hi,
I have a really simple script which I want to run forever, inside the loop it runs a C application which if it exits should restart.
#!/bin/sh
while true
do
./SCF scf.conf >> scf.log
sleep 2
done
For some reason the SCF C application coredumps and the script is exiting.... (3 Replies)
Hi I am having a problem exiting a WHILE loop. I am on a Sun server using ksh.
I am running a Veritas Cluster Software (High Availablity) command to obtain a group status and grepping the command output for status "G" which means that the filesystem is frozen and therefore not available to... (3 Replies)
Hello all,
I have a problem when installing Solaris 10 on Enterprise 450.
I booted from dvd, then the installation was started. The error appeared after determining the installation method, F2-Standard, F?-Flash......
The error was Exiting signal 6.
Please, need help. Thank you (4 Replies)
We are trying to design a flow so that an ETL job shouldn't start until the previous job completes. The script we have written is
while ; do sleep 2; done
The loop however exits even when the process is actually running. Why could this be happening? (12 Replies)
Hi ,
I am processing some files using below shell script the problem for loop exit after processing some files even though it exist.After modifying file.txt and rerunning the script and its running .Any Advise
for i in `cat /xx/file.txt |tr -s "," '\n' ` ; do
echo $i... (3 Replies)
Discussion started by: mohan705
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)