I use the following prompt in .zshrc:
PROMPT="%{$fg[magenta]%}%n%{$reset_color%}@%{$fg[blue]%}%m %{$fg[yellow]%}%1~ %{$reset_color%}%# " When I open terminal I see this prompt:
zoltan@zoltan-Macbook-Pro ~ % Is it possible to drop the text "zoltan" in the hostname? I would like to make it look like this:
zoltan@Macbook-Pro ~ % Any suggestion would be greatly appreciated. Thank you!
It's a bit of a mess, but you can pretend the %m is a parameter and use parameter expansion to strip the zoltan from the host name:
PROMPT="...${${(%):-%m}#1} ..." A little explanation. First, you create a "parameter" expansion that doesn't actually have a parameter name; it just uses the text you provide as the "value":
${:-%m} Next, add the % expansion flag so that any prompt escapes found in the value are processed.
${(%):-%m} Finally, next it in a final expansion that uses the # operator to remove a prefix from the string:
${${(%):-%m}#zoltan-} You can tame your prompt a bit by building up piece by piece (and use zsh's prompt escapes to handle the color changes, rather than embedding terminal control sequences explicitly).
PROMPT="%F{magenta}%n%f" # Magenta user name PROMPT+="@" PROMPT+="%F{blue}${${(%):-%m}#zoltan-}%f" # Blue host name, minus zoltan PROMPT+=" " PROMPT+="%F{yellow}%1~ %f" # Yellow working directory PROMPT+=" %# " 
export PROMPT="%F{magenta}%n%f@%F{blue}${${(%):-%m}#zoltan-}%f %F{yellow}%1~ %F{white}"
If you're using OhMyZsh, this is one line to add at the bottom of you .zshrc if you want the user and hostname in your PS1/PROMPT :
export PROMPT='%(!.%{%F{yellow}%}.)$USER@%{$fg[white]%}%M ${ret_status} %{$fg[cyan]%}%c%{$reset_color%} $(git_prompt_info)' Enjoy ;)
I stumbled upon this question and the wonderfully informative answer from @chepner inspired me to remove the .local from the %M (fully qualified machine hostname) in my own universal prompt.
In their case, they did:
${${(%):-%m}#zoltan-} In my case, I did:
${${(%):-%M}%.local} In shell substring removal
# means "trim from the left"% means "trim from the right"You can remember which is which because # and % are on the left and right of $ which is the char you use for ${parameter_substitution).
In my case, I had PS1 set in .zshrc. Look for '%m' - this corresponds to the hostname that you see in the prompt. Replace it what you want. Let me replace '%m' with CUSTOM.
OLD
autoload -U colors && colors PS1="%{$fg[green]%}%n%{$reset_color%}@%{$fg[cyan]%}%m %{$fg[yellow]%}%~ %{$reset_color%}%% " NEW
autoload -U colors && colors PS1="%{$fg[green]%}%n%{$reset_color%}@%{$fg[cyan]%}CUSTOM %{$fg[yellow]%}%~ %{$reset_color%}%% " 
%mis "The hostname up to the first '.'" An alternative might be to define another variable with the value you want, and reference that instead of%m...