I searched and found several steps to remove the redundant files. Then I found in /private/var/db/receipts there are many config like files, Anyone know the purpose if this directory?
/private/var/db/receipts are...well...receipts for packages/apps you have installed on your Mac. They list what was installed and when. The Plists also include version information. For example heres an example of my plist for Xcode (
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>InstallDate</key> <date>2018-06-05T18:36:40Z</date> <key>InstallPrefixPath</key> <string>/</string> <key>InstallProcessName</key> <string>storedownloadd</string> <key>PackageFileName</key> <string>Xcode.pkg</string> <key>PackageIdentifier</key> <string>com.apple.pkg.Xcode</string> <key>PackageVersion</key> <string>18.104.22.168.1.1526532315</string> </dict> </plist>
I don't think it has anything to do with MySQL.