Those shell files are for removing junk of Xcode.
Based on YoungSeon.Ahn's method >> https://lovemewithoutall.github.io/it/xcode-clean-up/ <<
RemoveXcodeCache:
~/Library/Developer/CoreSimulator/Devices
~/Library/Developer/CoreSimulator/Caches/dyld
~/Library/Developer/Xcode/DerivedData
~/Library/Developer/Xcode/Archives
~/Library/Developer/Xcode/iOS\ Device\ Logs
RemoveSimulator:
~/Library/Developer/Xcode/UserData/Previews
Remove Caches:
1. download the RemoveXcodeCache.sh file
2. open the terminal
3. chmod u+x RemoveXcodeCache.sh
4. sudo ./RemoveXcodeCache.sh
Remove Previews:
1. download the RemoveSimulator.sh file
2. open the terminal
3. chmod u+x RemoveSimulator.sh
4. sudo ./RemoveSimulator.sh
5. restart Xcode
you should read the script line by line before you run it !!!!