98 lines
1.4 KiB
Text
98 lines
1.4 KiB
Text
# test the trap code
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trap 'echo exiting' 0
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trap 'echo aborting' 1 2 3 6 15
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# make sure a user-specified subshell runs the exit trap, but does not
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# inherit the exit trap from a parent shell
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( trap 'echo subshell exit' 0; exit 0 )
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( exit 0 )
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trap
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func()
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{
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trap 'echo ${FUNCNAME:-$0}[$LINENO] funcdebug' DEBUG
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echo funcdebug line
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}
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trap 'echo [$LINENO] debug' DEBUG
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echo debug line
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trap
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func
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trap
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trap 'echo ${FUNCNAME:-$0}[$LINENO] debug' DEBUG
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func2()
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{
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echo func2debug line
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}
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declare -ft func2
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func2
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unset -f func2
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trap '' DEBUG
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trap
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trap - debug
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trap
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trap - HUP
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trap hup
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trap '' INT
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trap '' int
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trap
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# exit 0 in exit trap should set exit status
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(
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set -e
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trap 'exit 0' EXIT
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false
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echo bad
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)
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echo $?
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# hmmm...should this set the handling to SIG_IGN for children, too?
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trap '' USR2
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./trap1.sub
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trap - USR2
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# test ERR trap
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./trap2.sub
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${THIS_SH} ./trap3.sub
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${THIS_SH} ./trap4.sub
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# This doesn't work right on all Unix versions
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#${THIS_SH} ./trap5.sub
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#
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# show that setting a trap on SIGCHLD is not disastrous.
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#
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set -o monitor
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trap 'echo caught a child death' SIGCHLD
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sleep 7 & sleep 6 & sleep 5 &
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# this will only catch the first, since there's a trap on SIGCHLD
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wait
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trap -p SIGCHLD
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# Now reset some of the signals the shell handles specially back to
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# their default values (with or without the SIG prefix)
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trap - SIGINT QUIT TERM
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trap
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trap - SIGCHLD
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wait
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