Joydeep Sen Gupta created ZOOKEEPER-3955:
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Summary: added a shebang or a 'shell' directive to lastRevision.sh
Key: ZOOKEEPER-3955
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3955
Project: ZooKeeper
Issue Type: Bug
Reporter: Joydeep Sen Gupta
This solves the issue Shellcheck found by muse.dev (as part of the BugBash)
1. Added the shebang
2. Added $(...) notation instead of legacy backticked
3. Added double quote to prevent globbing and word splitting
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