Here's a brute force method using ksh:
The loop cycles forever, checking whether the file exists, and stops checking once found. You may want to consider the relative effect (if any) of having a script running constantly like this. A cron job that runs every minute might be a better choice, depending on your requirements.
I have a UNIX daemon process that's been started by a parent process, an application server.
The behavior of this daemon process is to inherit and use the app
server's file descriptors (ports/sockets).
When I shutdown the app server, the daemon continues to run, because there may be other... (1 Reply)
Hi ,
I want to know how to write a daemon process. I also want to know the concept behind daemon processes. Any material or sample program will be great :) .
Thanks in advance
-sg (2 Replies)
hi
i want to create a daemon under unix or linux but i don't really know how so i will be grateful if you provide me links with examples or /andx how to do it
thanks (2 Replies)
Hello,
I am new to this forum and this is my first post here...
I have never worked on either Pro*C or Multithreading..Now, i have to write a Pro*C, Multithreading daemon process.. I dont know where to start.. Can anybody help me with examples?
1. need to write a Pro*C multithreading... (0 Replies)
Hi Guys,
I hope this is the right forum to post this.
I have a directory where files will be dumped at any time of the day and I want to run scripts as soon as new files come into the directory.
How can I write a daemon that detects when new files have been uploaded to the directory?
... (1 Reply)
unix script must do the fiollowing
open a file containing comma delimited records
> each record contains 10 fields
> removes the 2nd field and use that same field containing fields 2 to 10
the original record after fprocessing should containing fields 1 and 3
a new erecord must be... (10 Replies)
I have scheduled a crontab job in AIX 6.1 OS to run twice in an hour which runs for the whole day to process a load.
The load which crontab kicks off needs files to arrive at a particular directory and if the files arrive, I process them.
It so happens that for the 24 times the crontab... (2 Replies)
My requirement is to run two scripts simultaneously.
Let say, script1.ksh is running in a loop :
example:
script1.ksh is:
for i in 1 2 3
do
script2.ksh 1 &
#psedu code which is required to write here
# if script 2.ksh is running, execute a script3.ksh (which actually check the... (2 Replies)
Discussion started by: sumitc
2 Replies
LEARN ABOUT HPUX
break
break(1) User Commands break(1)NAME
break, continue - shell built-in functions to escape from or advance within a controlling while, for, foreach, or until loop
SYNOPSIS
sh
break [n]
continue [n]
csh
break
continue
ksh
*break [n]
*continue [n]
DESCRIPTION
sh
The break utility exits from the enclosing for or while loop, if any. If n is specified, break n levels.
The continue utility resumes the next iteration of the enclosing for or while loop. If n is specified, resume at the n-th enclosing loop.
csh
The break utility resumes execution after the end of the nearest enclosing foreach or while loop. The remaining commands on the current
line are executed. This allows multilevel breaks to be written as a list of break commands, all on one line.
The continue utility continues execution of the next iteration of the nearest enclosing while or foreach loop.
ksh
The break utility exits from the enclosed for, while, until, or select loop, if any. If n is specified, then break n levels. If n is
greater than the number of enclosing loops, the outermost enclosing loop shall be exited.
The continue utility resumes the next iteration of the enclosed for, while, until, or select loop. If n is specified then resume at the n-
th enclosed loop. If n is greater than the number of enclosing loops, the outermost enclosing loop shall be used.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words that follow a command preceded by ** that are in the format of a variable assignment are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign, and also that word splitting and file name genera-
tion are not performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), exit(1), ksh(1), sh( 1), attributes(5)SunOS 5.10 17 Jul 2002 break(1)