ZSH on Ricky

Zsh Config Files and Priority

Mon, 08 May 2023 10:43:10 +0800

Zsh Config Files and Priority

Zsh environment variable config files:

.zprofile
.zlogin
.zshrc
.zshenv
.zlogout

.zshrc is used for overall shell customization

.zprofile and .zlogin are similar. They both set environment variables for login shells, but their load timing differs. .zprofile is based on Bash’s .bash_profile, while .zlogin is the CSH-style .login legacy name.
.zshrc sets environment variables for interactive shells. It loads after .zprofile. Typically used for $PATH, $PROMPT, aliases, functions, etc.
.zshenv is always read, so you can set environment variables like $PATH or $EDITOR there, but it is generally not used.
.zlogout is loaded when a session logs out, which is good for cleanup, such as resetting terminal titles.

Zsh loads ~/.zprofile at login (login shell).

Zsh tab-completion not working

Fri, 10 Dec 2021 17:44:49 +0800

Zsh tab-completion not working

Question

Although I’ve used Oh-My-Zsh in the past, I decided this time around (i.e. setting up a new computer) I’d try to avoid installing it to keep things a bit leaner. Right now I’m trying to cherry-pick Oh-My-Zsh’s insensitive tab-completion feature. Digging around its source repo, I found the following line: zstyle ':completion:*' matcher-list 'm:{a-zA-Z}={A-Za-z}' 'r:|=*' 'l:|=* r:|=*'

I’m fairly confident this is the line Oh-My-Zsh executes to do what I want, so I tried adding it to my .zshrc. Restarted my terminal. Typed cd desk, then hit [tab]. No dice – I didn’t get cd Desktop/.

Super easy! Build a beautiful and handy zsh terminal

Thu, 07 Oct 2021 08:44:18 +0800

I can feel the speed — optimize zsh and oh my zsh cold start

Thu, 15 Jul 2021 18:19:06 +0800

I can feel the speed — optimize zsh and oh my zsh cold start

Profiling

# .zshrc
zmodload zsh/zprof

$ /bin/zsh
$ zprof

num calls time self name
-----------------------------------------------------------------------------------
 1) 1 395.66 395.66 33.10% 395.59 395.59 33.09% _zsh_nvm_auto_use
 2) 1 216.22 216.22 18.09% 216.13 216.13 18.08% nvm_die_on_prefix
 3) 1 648.00 648.00 54.20% 168.85 168.85 14.12% nvm_auto
 4) 2 479.15 239.57 40.08% 160.50 80.25 13.43% nvm
 5) 1 102.30 102.30 8.56% 84.99 84.99 7.11% nvm_ensure_version_installed
 6) 2 51.21 25.60 4.28% 29.55 14.78 2.47% compinit
 7) 1 680.18 680.18 56.89% 22.17 22.17 1.85% _zsh_nvm_load
 8) 2 21.66 10.83 1.81% 21.66 10.83 1.81% compaudit
 9) 1 17.31 17.31 1.45% 17.31 17.31 1.45% nvm_is_version_installed
10) 193 17.43 0.09 1.46% 14.50 0.08 1.21% _zsh_autosuggest_bind_widget
[Redacted]

The zprof module only reports the time for each zsh function, so it is useful for finding oh-my-zsh plugins that slow down cold start. To profile the entire .zshrc, use xtrace. Add the following at the top of .zshrc:

Let Zsh read macOS system proxy settings and set env vars

Mon, 11 Jan 2021 14:50:11 +0800

Let Zsh read macOS system proxy settings and set env vars

$ system_profiler SPNetworkDataType # get full network configuration

$ networksetup -listallnetworkservices # list all network services
$ networksetup -getwebproxy Wi-Fi # get system proxy settings for a specific service

$ scutil --proxy # get enabled proxy settings (wrapper for system_profiler)