03-14-2011
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have never coded in perl before (just started today morning :). I need to write a perl program to automate a task.
Here is how I do it manually:
Start a program in my home dir. Now if I want to execute another program while this one is still running, what I would do is go to another... (6 Replies)
Discussion started by: the_learner
6 Replies
2. Shell Programming and Scripting
Hi Unix gurus,
I am facing a threading problem in Perl.
I have a worker thread in perl in which I am calling a shell script.
The shell script echo's output to the Standard Output from time to time as it progresses.
In the worker thread, I am unable to display the echo statement of shell... (1 Reply)
Discussion started by: som.nitk
1 Replies
3. Shell Programming and Scripting
Hi Everyone,
#!/usr/bin/perl
use strict;
use warnings;
my @test=("a;b;qqq;c;d","a;b;ggg;c;d","a;b;qqq;c;d");
would like to split the @test array into two array:
@test1=(("a;b;qqq;c;d","a;b;qqq;c;d"); and @test2=("a;b;ggg;c;d");
means search for 3rd filed.
Thanks
find the... (0 Replies)
Discussion started by: jimmy_y
0 Replies
4. Shell Programming and Scripting
Hello,
I have a PERL-TK based GUI from which I want to launch a command on an existing UNIX terminal (this is also the parent terminal for this perl based gui window). The command I want to launch is interactive (there is no intention to interact with that command from the same PERL gui i.e. no... (2 Replies)
Discussion started by: AnuragJindal
2 Replies
5. Shell Programming and Scripting
Hi i wanted to know if any one can give me an example on how to launch a windows program in a perl script. I wanted to open the nmap software on my computer with a perl script, i heard this can be done with the system function. Would the function be in this format:
$text =... (1 Reply)
Discussion started by: kingbp
1 Replies
6. Shell Programming and Scripting
So I am attempting to get a short but complex perl script to be able to time out an application that I will launch from a command line. The terminal I use is MKS C SHELL and I am having trouble doing the a job spawn that will launch the application and keep time on it.
I know you could do this... (1 Reply)
Discussion started by: vas28r13
1 Replies
7. Shell Programming and Scripting
Hi,
I have the following lines that I would like to see in an array for easy comparisons and printing:
Example 1:
field1,field2,field3,field4,field5
value1,value2,value3,value4,value5Example 2:
field1,field3,field4,field2,field5,field6,field7... (7 Replies)
Discussion started by: ejdv
7 Replies
8. Shell Programming and Scripting
I have an array and two variables as below,
I need to check if $datevar is present in $filename.
If so, i need to replace $filename with the values in the array.
I need the output inside an ARRAY
How can this be done.
Any help will be appreciated. Thanks in advance. (2 Replies)
Discussion started by: irudayaraj
2 Replies
9. Shell Programming and Scripting
Hi everyone,
I am trying to create a script which runs a number of processes simultaneously and at the same time use a timer to keep track of what is going on.
The problem is that the timer stops and the script exits upon the completion of some of the processes, whereas I want to timer to... (0 Replies)
Discussion started by: free2rhyme2k
0 Replies
10. Shell Programming and Scripting
Hi there
I have a counter called
my $counter = 0;
I am trying to build an array that will have a name that is for example
my @array0 = ("some", "stuff");
but instead of hard coding the "0" in the array name i want to use whatever value the aforementioned $counter has in it...so
... (1 Reply)
Discussion started by: hcclnoodles
1 Replies
LEARN ABOUT HPUX
pthread_cond_broadcast
pthread_cond_signal(3T) pthread_cond_signal(3T)
NAME
pthread_cond_signal(), pthread_cond_broadcast() - unblock one or all threads waiting on a condition variable
SYNOPSIS
PARAMETERS
cond Pointer to the condition variable to be signaled or broadcast.
DESCRIPTION
The function is used to wake-up one of the threads that are waiting for the occurrence of a condition associated with condition variable
cond. If there are no threads blocked on cond, this function has no effect. If more than one thread is blocked on cond, the scheduling
policy determines which thread is unblocked. It is possible that more than one thread can be unblocked due to a spurious wakeup.
The function is used to wake-up all threads that are waiting for the occurrence of a condition associated with the condition variable cond.
If there are no threads blocked on cond, this function has no effect. If more than one thread is blocked on cond, the scheduling policy
determines the order in which threads are unblocked.
The condition variabled denoted by cond must have been dynamically initialized by a call to or statically initialized with the macro
An unblocked thread will reacquire the mutex it held when it started the condition wait before returning from or The threads that are
unblocked contend for the mutex according to their scheduling policy and priority.
The or functions can be called by a thread whether or not it currently owns the condition variable's associated mutex. For predictable
scheduling behavior and to prevent lost wake-ups, the mutex should be held when signaling a condition variable.
Usage
When using condition variables, there is a boolean predicate associated with each condition wait. If this predicate is false, the thread
should do a condition wait. Spurious wakeups may occur when waiting on a condition variable. Because the return values from and do not
imply anything about the value of this predicate, the predicate should always be re-evaluated.
Applications using condition variables typically acquire a mutex and enter a loop which checks the predicate. Depending on the value of
the predicate, the thread either breaks out of the loop or waits on the condition. On return from the condition wait, the predicate is re-
evaluated.
RETURN VALUE
Upon successful completion, and return zero. Otherwise, an error number is returned to indicate the error (the variable is not set).
ERRORS
For each of the following conditions, if the condition is detected, the and functions return the corresponding error number:
[EINVAL] cond is not a valid condition variable.
[EFAULT] cond parameter points to an illegal address.
AUTHOR
and were derived from the IEEE POSIX P1003.1c standard.
SEE ALSO
pthread_cond_init(3T), pthread_cond_wait(3T).
STANDARDS CONFORMANCE
Pthread Library pthread_cond_signal(3T)