Attempt unzip of bzip files only if they exist

[erikng]

This will reduce logging errors.

[calum-github]

You don't need to unzip them. You can use bzgrep to grep through the zip files

eg: you could do something like:

SVR_DEBUG_LOGS=$(ls -d ${LOG_LOCATION}/* | grep -v -e "AssetCache.pid" -e "LastState.plist")

for DEBUG_LOG in $SVR_DEBUG_LOGS; do 
    echo "- Searching log: $DEBUG_LOG for entries from: $YESTERDAY ..."
    bzgrep -E ^\s*"${YESTERDAY}" "$DEBUG_LOG"  >> "${TMP_LOCATION}"/MergedLog-"${YESTERDAY}".log
done

[erikng]

Send a PR.

[erikng]

This issue will be fixed in the next version of Cacher