putting a file in gitignore code example

Example 1: create gitignore files

#Linux
$ touch .gitignore

#Windows
cd c:\
notepad .gitignore
#Accept the prompt to create the file, edit the contents accordingly, save and close.

Example 2: how to put files into gitignore

$ echo debug.log >> .gitignore
$ git rm --cached debug.log
rm 'debug.log'
$ git commit -m "Start ignoring debug.log"