Steps to show the hidden files on your mac

1. Launch the Terminal(/Application/Utilities)

OR

Hold the command key and press the space bar you could see the search box right corner of your mac and type terminal.

Click on spotlight search icon  right corner of your mac and type terminal.

2. Type the following command exactly

defaults write com.apple.Finder AppleShowAllFiles TRUE

then for relaunch the finder Type the following command exactly..

killall Finder