how to make gitignore work code example

Example 1: how to create gitignore

# Don't track content of these folders
node_modules/
someOtherfoler/


# Compiled source #
###################
*.com
*.class
*.dll
*.exe
*.o
*.so

*.so

# Packages #
############
# it's better to unpack these files and commit the raw source
# git has its own built in compression methods
*.7z
*.dmg
*.gz
*.iso
*.jar
*.rar
*.tar
*.zip

Example 2: how to generate a .gitignore

echo "function gi() { curl -L -s https://www.gitignore.io/api/\$@ ;}" >> ~/.bash_profile && source ~/.bash_profile