Hi,
I want to do the foll steps:
1. Check if someone has a lock on my file1.
2. if file1 is locked by any other user
wait in a loop till another user releases lock
3. when lock released, lock file1.
4. do procesing (write) on file1.
5. processing complete. release lock on file1.
... (2 Replies)
Hi,
I want to know my file is 1 hr 30 min old or not,
If 1 hr 30 min old I will do some tasks in that file.. other wise I will wait to 1 hr 30 min and then do the tasks.. how to do it in Unix script? any idea? (3 Replies)
:cool:
I need to execute a shell script to do the following:
cat a file
run two back ground processes using the first two values from the file
wait till those background processes finish
run two more background processes using the next two values from the file
wait till those background... (1 Reply)
Did not use 'wait' yet.
How I understand by now the wait works only for child processes, started background.
Is there any other way to watch completion of any, not related process (at least, a process, owned by the same user?)
I need to start a background process, witch will be waiting... (2 Replies)
I have to schedule a script in cron that watch for a trigger file named as xyz_extract_file_20081201.null (the YYYYMMDD portion would change every day). The wait/wakeup time would be 1 min and the date portion will always be current date (Eg., the trigger file named as... (2 Replies)
i want to do 2 things
1) i should wait for a file called A.txt to fall on a specific path on the server
2) once the file arrives immediately another script called B.sh should be executed.
Could you please throw somelight on this.
Any code if already present that would be helpful.
... (13 Replies)
I'm a novice at unix and need it more and more to do my work.
I seem running into problems getting this script "attempt" to work:
I need to copy all files in a directory, which is containing 22000 files, into a directory one level up. There a tool monitors the content of the dir and processes... (2 Replies)
Hello,
I need to evaluate (under BASH) if the certain file has been updated or not. If the file still wasn't updated, script should wait. The script picks up the time stamp of the file using command OldTimestamp=$(date -r $MyDir/$MyFile), but I don't know how to code a waiting loop with new and... (6 Replies)
Hi,
I am facing a strange issue,
when i call a script from my while loop in background it doesnt go in background, despite the wait i put below the whil loop it goes forward even before the process put in background is completed.
cat abc.txt | while read -u4 line
do
#if line contains #... (2 Replies)
Hi,
I have a requirement to create below script:
Script must run infinitely in background.
It will check a particular type of file to be copied in specific folder of server
Script must wait till any file gets fully copied ..(important) and then
It will read that file
Experts please... (4 Replies)
Discussion started by: Vikash163
4 Replies
LEARN ABOUT HPUX
wait
wait(1) General Commands Manual wait(1)NAME
wait - await process completion
SYNOPSIS
[pid]
DESCRIPTION
If no argument is specified, waits until all processes (started with of the current shell have completed, and reports on abnormal termina-
tions. If a numeric argument pid is given and is the process ID of a background process, waits until that process has completed. Other-
wise, if pid is not a background process, exits without waiting for any processes to complete.
Because the system call must be executed in the parent process, the shell itself executes without creating a new process (see wait(2)).
Command-Line Arguments
supports the following command line arguments:
The unsigned decimal integer process
ID of a command, whose termination is to wait for.
WARNINGS
Some processes in a 2-or-more-stage pipeline may not be children of the shell, and thus cannot be waited for.
SEE ALSO csh(1), ksh(1), sh-posix(1), sh(1), wait(2).
STANDARDS CONFORMANCE wait(1)