Created
February 2, 2018 16:13
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#linux
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| #!/bin/bash | |
| #globals | |
| export LOCKFILE="/var/tmp/trade_engine.lockfile" | |
| export CMD="python print.py" | |
| #release lock in case of trap signal | |
| trap 'rm -f "$LOCKFILE"; exit $?' INT TERM | |
| #acquire lock | |
| flock -n $LOCKFILE $CMD | |
| if [ $? -eq 0 ]; then | |
| echo "Another process running of "$CMD | |
| else | |
| #clean up | |
| rm -rf $LOCKFILE | |
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