How can I make my shell prompt look like a cheeseburger?

great choice!

$ sudo apt-get install ttf-ancient-fonts
$ export PS1="\\u@\h \\w 🍔 "

enjoy.

Putting a cheeseburger on the prompt:

1. Install a unicode font that contains this character:

   sudo apt-get install ttf-ancient-fonts
   

2. Try the prompt:

   export PS1="\\u@\h \\w 🍔  "
   

3. Make permanent the change (if you don't do that, it will reset once terminal is closed):

   • Run nano .bashrc
   • Go to the 59th line approx. (You can view the current line number pressing Ctrl+C)

   • Locate these lines:

     if [ "$color_prompt" = yes ]; then
         PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
     else
         PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
     fi
     

   • Replace \$ character a the end of the lines beginning with PS1= by the cheeseburger:

     if [ "$color_prompt" = yes ]; then
         PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\] 🍔 '
     else
         PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\ 🍔 '
     fi
     

Typing a cheeseburger everywhere (linux only):

1. Press Ctrl+Shift+U
2. A underlined lowercase u will appear.
3. Type 1f354
4. Press Return
5. A nice cheeseburger will appear.

I couldn't help but take this probably a step too far. This version updates your prompt to display a different character based on time of day, to illustrate what you should be doing at that time.

declare -A pp
pp=(["09"]="🍩🍵" ["07"]="🌅" ["08"]="🌅" [10]="💻" [11]="💻" [12]="🍔🍟" [13]="🍔🍟" [14]="💻" [15]="💻" [16]="💻" [17]="🚗" [18]="🚗" [19]="🍷🍸" [20]="🍷🍸" [24]="🌙")
u_pp() {
  c=${pp[`date +"%H"`]}
  if [[ $c == "" ]]; then
    c=${pp[24]}
  fi
  PS1='\u@\h:\w${c} '
};
u_pp
export PROMPT_COMMAND="u_pp;"

Probably there's a more concise way to do it; my bash isn't all that great.

To add the current time of day on the left side, replace the assignment of PS1:

PS1='[\@] \u@\h:\w${c} '

If you can't install the 'ancient fonts' maybe a sideways ASCII art cheeseburger would work?

export PS1="\\u@\h \\w (||]"

Of course, there could be different ways of typing this, possibly including lettuce, pickles, etc.