29 lines
576 B
Plaintext
29 lines
576 B
Plaintext
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trap "echo got signal" USR1
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for try in 1 2 3 4 5; do
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kill -USR1 $$
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sleep 0.2
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echo "sent $try signal"
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done &
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# Ensure "wait" has something to wait for
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sleep 2 &
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# Ensure we do not execute "trap" below before "kill -USR1" above
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# (was getting failure on loaded machine without this)
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sleep 0.1
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sleeping=true
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while $sleeping; do
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trap
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if wait %%; then
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echo "sleep completed"
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sleeping=false
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elif [ $? = 127 ]; then
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echo "BUG: no processes to wait for?!"
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sleeping=false
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else
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echo "wait interrupted"
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fi
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done
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