Now i can't get FD_ISSET to work

10 More Discussions You Might Find Interesting

1. IP Networking

Discussion at work, would a router work pluging a cable in wan1 and lan1?

hi all. and sorry for the random question, but this sparkled a raging flame-war at work and i want more points of view situation a router, with linux of some sort, dhcp client requesting for ip in wan1 (as usual with wan ports) dhcp server listening in lan1, and assigning ip (as usual...

2. Shell Programming and Scripting

My script work on Linux but not work in sunos.

My script work on Linux but not work in sun os. my script. logFiles="sentLog1.log sentLog2.log" intial_time="0 0" logLocation="/usr/local/tomcat/logs/" sleepTime=600 failMessage=":: $(tput bold)Log not update$(tput rmso) = " successMessage="OK" arr=($logFiles)...

3. IP Networking

NIC will not work, but it did work.

I have a client machine that was built and loaded with SCO UNIX 2.1.3, (yes it is old). The machine worked fine on the closed network that I tested on in my shop. I then had to change it to the network that it would be connected to. Below is the host file, router and subnet mask file that I usually...

4. Shell Programming and Scripting

ls -d does not work

Hi falks, I need to dispaly a list of only directories . As it written in the manual ,the command to do it is 'ls -d'. When i issue 'ls -d' i'm getting: tornado.orca.ent:DB10g :/home/oracle/Create_Database > ls -d . Is anyone have any idea why id does not display directories ,or maybe...

5. Linux

How does it work?

Can anyone explain how Graphic LCD (CSTN / STN) work in Unix... From Graphic file thro driver code to display....? Thanks

6. UNIX for Dummies Questions & Answers

cant get this to work

whoami | grep < $1 | echo $1 trying to write a script that finds out who the user is and then takes occurences of that username from a file that is passed as an argument and then displays it

7. UNIX for Advanced & Expert Users

how does this work....

1|foo|bar 2|usa|ll 3|usa|vg 4|usa|vg 5|bar|vg 6|usa|vg 7|usa|ll 8|uk|nn 9|foo|manu|bar 10|uk|bb 11|foo|mm 12|kuwait|jkj 13|kuwait|mm 14|dubai|hh awk '/foo/,/bar/' test_file1----command run at the prompt output should have been the first 3 lines...... 1|foo|bar

8. UNIX for Dummies Questions & Answers

Script doesn't work, but commands inside work

Howdie everyone... I have a shell script RemoveFiles.sh Inside this file, it only has two commands as below: rm -f ../../reportToday/temp/* rm -f ../../report/* My problem is that when i execute this script, nothing happened. Files remained unremoved. I don't see any error message as it...

9. UNIX for Advanced & Expert Users

how does this work???

can someone tell me the meaning of this commnad, If you want to see a grand total of CPU time for a program when it finishes running, you can use the time command. At the Unix prompt, enter: time java myprog Replace myprog with the name of the program you are running. The following is an...

10. Shell Programming and Scripting

Will this work?

I'm trying to check if files already exist in a directory. They have the same basename (exsyctr1), but 4 different extensions. If the files exist, then I make backups of them, then copy them from another directory ($livecomp/data) to the current one ($copycomp/data). If they don't exist, just...

LEARN ABOUT HPUX

pw_postv

postwait(2)							System Calls Manual						       postwait(2)

NAME

       postwait: pw_getukid(), pw_wait(), pw_post(), pw_postv(), pw_getvmax() - lightweight synchronization mechanism

SYNOPSIS

DESCRIPTION

       Postwait  is  a fast, lightweight sleep/wakeup mechanism that can be used for synchronization by cooperating kernel threads within a single
       process or between separate processes.

       A thread calls to block.  It resumes execution when it is posted by another thread, the call expires, or is signaled.  If one or more posts
       are already pending, returns immediately.

       Threads	using postwait are identified by their ukid.  A thread retrieves its ukid by calling It shares this ukid with anyone it chooses by
       any means it considers appropriate (for example, shared memory).

       is called with a timeout ts.  If ts is NULL, the thread will not timeout.  It will remain blocked until posted or a signal wakes it up.

       If ts points to a zero-valued timespec, will return immediately with a value (and indicating whether or not it was posted.

       If ts points to a timespec whose value is greater than zero, the thread will block for that amount of time unless it is	posted	or  inter-
       rupted  by a signal, in which case the timespec pointed to by ts is updated with the remaining time.  The return value and are set to indi-
       cate the reason the call returned.

       is used to post many threads with a single call.  It posts to all threads in the targets array.	An value for each target  is  returned	in
       the errors array.  (0 indicates success.)  If the errors pointer is zero, no target-specific errors are copied out.

       There is a maximum number of threads that can be posted with a single call.  This value is returned by

       Posts sent to a kernel thread that already has a post pending against it are discarded.

RETURN VALUE

       returns 0 if it succeeds, -1 otherwise.

       returns 0 if posted, -1 otherwise.

       returns 0 if the post succeeds, -1 otherwise.

       returns 0 if every post succeeds, -1 otherwise.

       returns the maximum number of kernel threads that can be posted with a single call to

ERRORS

       sets to one of the following values if it fails:

	      ukid	     points to an illegal address.  The reliable detection of this error is implementation dependent.

       sets to one of the following values if it fails:

	      was called     with a timeout of 0 but the caller has no post(s) pending.

	      was called     with a timeout that expired.

	      ts	     points to an illegal address.  The reliable detection of this error is implementation dependent.

	      was interrupted
			     by a signal.

	      The	     timespec pointed to by ts is invalid.

       sets to one of the following values if it fails:

	      The	     ukid refers to a non-existent kernel thread.

       sets to one of the following values if it fails:

	      targets	     points to an illegal address.  The reliable detection of this error is implementation dependent.

	      errors	     points to an illegal address.  The reliable detection of this error is implementation dependent.

	      count	     is less than 0.

	      count	     exceeds the maximum value (as returned by

	      A 	     ukid refers to a non-existent kernel thread.

																       postwait(2)

Programming