Now i use ubntu 17.10.
How to change git command for example 
- git add .command like- ga,
- git commitcommand like- gc
- git pushcommans lije `gp
other example like 
$ git add command like $ ga
when i typing ga then it work like git add
Now i use ubntu 17.10.
How to change git command for example 
git add . command like ga,git commit command like gcgit push commans lije `gpother example like 
$ git add command like $ ga
when i typing ga then it work like git add
 
    
    Consider using Git aliases e.g.
git config --global alias.co checkout
https://git-scm.com/book/en/v2/Git-Basics-Git-Aliases
To achieve exactly what you want you can use bash aliases
in your bash prompt type
alias ga="git add ."
This will only be valid until you close your shell. To have your aliases be persistent add them to your ~/.profile file.
echo 'alias ga="git add ."' >> ~/.profile
Ubuntu uses ~/.profile instead of ~/.bash_profile.
Best of luck!
 
    
    You want to use aliases within your shell. 
For Bash: 
echo "alias ga='git add .'" >> ~/.bash_profile
echo "alias gc='git commit'" >> ~/.bash_profile
echo "alias gp='git push'" >> ~/.bash_profile
Or, for ZShell
echo "alias ga='git add .'" >> ~/.zshrc
echo "alias gc='git commit'" >> ~/.zshrc
echo "alias gp='git push'" >> ~/.zshrc
Once run, simply open your new terminal.
 
    
    If i understood your question correctly then below is detailed explanation of how to use alias
