SHELL

git config

git config --global user.name "John Doe"
git config --global user.email johndoe@example.com

git config command

git config

git config

# Get system value
$ git config --system --get https.proxy
$ git config --system --get http.proxy

# Get global value
$ git config --global --get https.proxy
$ git config --global --get http.proxy

# Check configuration for your user
$ cat $HOME/.gitconfig

# Unset system value
$ git config --system --unset https.proxy
$ git config --system --unset http.proxy

# Unset global value
$ git config --global --unset https.proxy
$ git config --global --unset http.proxy

what to do with the git config

Follow the steps mentioned inside the below link: 
https://git-scm.com/book/en/v2/Getting-Started-First-Time-Git-Setup

Git config path: C:UsersUSER_NAMEAppDataLocalProgramsGitetc