Update btrfs-backup script. Add lock file generation
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@ -53,6 +53,7 @@ create_lock() {
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# Create new lock file with current PID
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# Create new lock file with current PID
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sudo touch "$LOCK_FILE"
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sudo echo $$ > "$LOCK_FILE"
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sudo echo $$ > "$LOCK_FILE"
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# Ensure lock file is removed on script exit
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# Ensure lock file is removed on script exit
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