One of the stop signals cannot be caught, something the kill not signal man page tells you. My very educational buddy truss/tusc tells us:
Code:
tusc -fap ksh -i
(p is a named pipe, so typing 'wc p' hangs blocked on open, and the cntrl-z stops it) that ^Z stty susp is SIGTSTP, which can be caught. You were blocking that signal, not SIGINT = cntrl-c usually. Maybe you need to catch it but do little? Else, Google 'UNIX signal tutorial' like I do at such times.
Moderator's Comments:
Unix/Linux Man Pages are found here, on our site. Please use them in these forums.
Note: Older systems do not support the sigprocmask() system call. Instead, one should use the sigmask() and sigsetmask() system calls. If you have such an operating system handy, please read the manual pages for these system calls. They are simpler to use than sigprocmask, so it shouldn't be too hard understanding them once you've read this section.
These 2 Users Gave Thanks to DGPickett For This Post:
Hi,
when I execute a script on unix AIX, I've got an error message:
"Execution: 85328 Signal d'alarme".
If I edit this file with "vi", I ve got the same error after a while (about 1 minute).
If I try with another user I still have the problem.
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for example:
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bash, ksh and sh.
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Hi!
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Hi all
I have Master script, Main script ,and 4 Child script.
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A program have to receive signals and work agreed with it, but the process have to receive more than one signal when it is attending other. Those have to be queued to be attended later recived.
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10-22-2010
