essential_commands.md

The 5 essential commands

**Yes**, you only need 5 commands!
`pull, status, add, commit, push`
or in other words (remember these!): ```bash $ git pull $ git status $ git add myFile.txt # example $ git commit -m "myMessage" # example $ git push ```

Pull the latest version of an existing repository

First, browse to the cloned directory (git clone [...]):

$ cd practice

Then, pull the latest revision:

$ git pull
# Already up to date

Verify its status with:

$ git status

Be safe and create a new branch

(more on branches in a few minutes)

$ git checkout -b matrix_vect_mult_myName

Modify a file

Modify and rename addTwoNumbers.m in the folder firstCommit

Open the file `addTwoNumbers.m` in the folder `firstCommit` using the `Atom` editor (or any other editor).
Then, rename the function by adding your name (`addTwoNumbers_myName`)
Uncomment the line ```Matlab % c = a + b ```
Save and rename the file by adding your name ```bash $ mv firstCommit/addTwoNumbers.m firstCommit/addTwoNumbers_myName.m ```

Add your file to the stage

First, check the repository status

$ git status
# uncommitted changes (displayed in red)

Now, add the file (bring it on stage) ```bash $ git add firstCommit/addTwoNumbers_myName.m # returns the same as before, generally in green (means staged) ```

**ADVANCED**: see your changes in the terminal ```bash $ git diff ``` exit with `q`

Add a commit message

$ git commit -m "Uncommented line for adding 2 numbers"
$ git status

You can pull, even at this stage, new possible changes ```bash $ git pull ```

Push your file to the repository

$ git push

**ADVANCED**: see the log of all the commits (and your last one) in the terminal ```bash $ git log ``` exit by typing `q`

Do it yourself

• Modify and rename secondCommit/multiplyTwoNumbers.m
• Push the file secondCommit/multiplyTwoNumbers_myName.m
• Don't forget to add _myName

Commands: ```bash $ git pull $ git diff # optional $ git add secondCommit/multiplyTwoNumbers_myName.m $ git commit -m "Uncommented line for multiplying 2 numbers" $ git status $ git push $ git log # optional ```