function() {
# some code
echo $? # $? contains the return value of the command
}
return_value=function
if [ $return_value -ne 0 ]; then
# deal with error
fi
My problem is this:
I need to have a catch-all for my processes. An example would be, using a trap, in the parent, to catch any non-0 exit or invalid command (a way to catch core dumps would be cool, too) in not only the parent, but it's children and they're children. Not only that, but I also... (7 Replies)
I'd like to use "trap" command on my unix machine sunOS 5.7.
But somehow when I do "which trap" command, it's no where to be found.
Any one knows how I can get it installed?
Thanks!! (9 Replies)
Hello all,
I'm hoping to get a little insight from some of the wily veterans amongst you.
I've written a script to check for new outgoing files to our vendors located on our ssl server. It seems to be working ok, but the final question here, will be one of logic, and/or a better way to... (4 Replies)
Hi All
"Identify the behavior of traps, mechanism to implement traps in the snmp framework"
What does it mean?? Can anybody explain.. Whats this Trap??
Thanx in Advance. (1 Reply)
I have a script
#!/bin/ksh
trap cleanup 20
cleanup()
{
cat $t.log
echo Caught
exit 1
}
if ;then
echo Found >>t.log
exit 20
else
echo Not found >>t.log
exit 20
fi (5 Replies)
Hi folks,
I have tried to add some trap detection in the below script....this script is used to monitor database activities...in a rather awkward way :rolleyes:....
The idea behind adding trap is that....this script creates lots of temporary files in the running folder to store the count... (1 Reply)
Hi
At the beginning of my script, i will create a file and at the end of the script i will delete that.
But i got to delete the file even if the process is forcefully killed, or server is rebooted...
I think i can make use of trap signal, but couldnt figure out how and where to use in my... (4 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
That is the last reply I received from my instructor, and I'm looking for some alternatives.
When using... (2 Replies)
Hi Ppl,
Need help
$ cat trap.sh
#!/bin/bash
trap cleanup 1 2 3 15
cleanup()
{
echo “I was running \”$BASH_COMMAND\” when you interrupted me.”
echo “Quitting.”
exit 1
}
while :
do
echo -en “hello. “
sleep 1 (3 Replies)
Discussion started by: heman96
3 Replies
LEARN ABOUT OSF1
sigaddset
sigemptyset(3) Library Functions Manual sigemptyset(3)NAME
sigemptyset, sigfillset, sigaddset, sigdelset, sigismember - Creates and manipulates signal masks
LIBRARY
Standard C Library (libc.so, libc.a)
SYNOPSIS
#include <signal.h>
int sigemptyset (
sigset_t *set);
int sigfillset (
sigset_t *set);
int sigaddset (
sigset_t *set,
int sig_number );
int sigdelset (
sigset_t *set,
int sig_number );
int sigismember (
sigset_t *set,
int sig_number );
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
sigemptyset(), sigfillset(), sigaddset(), sigdelset() sigismember(): XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about industry standards and associated tags.
PARAMETERS
Specifies the signal set. Specifies the individual signal.
DESCRIPTION
The sigemptyset(), sigfillset(), sigaddset(), sigdelset(), and sigismember() functions manipulate sets of signals. These functions operate
on data objects that can be addressed by the application, not on any set of signals known to the system, such as the set blocked from
delivery to a process or the set pending for a process.
The sigemptyset() function initializes the signal set pointed to by the set parameter such that all signals are excluded. The sigfillset()
function initializes the signal set pointed to by the set parameter such that all signals are included. A call to either the sigfillset()
or sigemptyset() function must be made at least once for each object of the type sigset_t prior to any other use of that object.
The sigaddset() and sigdelset() functions respectively add and delete the individual signal specified by the sig_number parameter from the
signal set specified by the set parameter. The sigismember() function tests whether the sig_number parameter is a member of the signal set
pointed to by the set parameter.
EXAMPLES
To generate and use a signal mask that blocks only the SIGINT signal from delivery, enter: #include <signal.h> int return_value; sigset_t
newset;
. . . sigemptyset(&newset); sigaddset(&newset, SIGINT); return_value = sigprocmask (SIG_SETMASK, &newset, NULL);
RETURN VALUES
Upon successful completion, the sigismember() function returns a value of 1 if the specified signal is a member of the specified set, or a
value of 0 (zero) if it is not. Upon successful completion, the other functions return a value of 0. For all the preceding functions, if
an error is detected, a value of -1 is returned and errno is set to indicate the error.
ERRORS
The sigfillset(), sigdelset(), sigismember(), and sigaddset() functions set errno to the specified values for the following conditions: The
value of the sig_number parameter is not a valid signal number.
RELATED INFORMATION
Functions: sigaction(2), sigprocmask(2), sigsuspend(2), sigvec(2)
Files: signal(4)
Standards: standards(5) delim off
sigemptyset(3)