If you want to add you own shortcuts (called alias) as available commands (could be your laptop or a server) just do the following :

```
alias YOURALIAS='full command'
```

**It usually goes to the .bashrc:**

```
sudo nano .bashrc
```

Here are some alias I use :

```
# SSH
# implies that you have set SSH keys for a direct connection
# useful ! You won't have to enter your password each time you want to access to your remote server
alias sshmysite='ssh mylogin@mysite.com'

# browsing
alias la='ls -alh --color=auto'
alias ..='cd ..'
alias ...='cd ../../../'
alias ....='cd ../../../../'
alias .....='cd ../../../../'
alias .4='cd ../../../../'
alias .5='cd ../../../../..'

# upgrade & update
alias allupdate='sudo apt-get update && sudo apt-get dist-upgrade'

# tar
# implies that you use .tar.gz files
alias tarz="tar -cvfz"
alias untarz=" tar -xvfz"

# rm
alias rmdir="rm -rf"

# space check
alias df='df -h'