zshを導入&便利なパッケージを入れてみる

// 現在設定されているシェルを出力
$ echo $SHELL
/bin/bash

// インストールされているシェル一覧表示
$ cat /etc/shells
/bin/bash
/bin/csh
/bin/dash
/bin/ksh
/bin/sh
/bin/tcsh
/bin/zsh ⇦ zshあった！

// デフォルトのシェルをzshに変更
$ chsh -s /bin/zsh
Changing shell for ***
Password for ***:

// ターミナルの別タブを開き直して、設定されているシェルを確認
$ echo $SHELL
/bin/zsh

// 以下追記
$ vim ~/.zshrc
alias ll='ls -la'
alias h='history | grep '
alias ga='git add'
alias gcm='git commit -m'
alias gd='git diff'
alias gdc='git diff --cached'
alias gs='git status'
alias gb='git branch'
alias gc='git checkout'
alias gss='git stash'
alias gcl='git clean'
alias gca='git commit --amend'
alias dcom='docker-compose'
alias dcon='docker container'
alias dn='docker network'
alias dni='docker network inspect'
alias d='docker'
alias gcp="git cherry-pick"

// 設定反映
$ source ~/.zshrc

// brew install
$ brew install zsh-completions
Updating Homebrew...
==> Auto-updated Homebrew!
--- 略---
==> Caveats
To activate these completions, add the following to your .zshrc:

  if type brew &>/dev/null; then
    FPATH=$(brew --prefix)/share/zsh-completions:$FPATH

    autoload -Uz compinit
    compinit
  fi

You may also need to force rebuild `zcompdump`:

  rm -f ~/.zcompdump; compinit

Additionally, if you receive "zsh compinit: insecure directories" warnings when attempting
to load these completions, you may need to run this:

  chmod -R go-w '/usr/local/share/zsh'
--- 略---

//  ~/.zshrc に設定追加
$ vim ~/.zshrc
// 以下追記
if type brew &>/dev/null; then
  FPATH=$(brew --prefix)/share/zsh-completions:$FPATH
  autoload -Uz compinit
  compinitz
fi

// 変更反映
$ source ~/.zshrc
zsh compinit: insecure directories, run compaudit for list.
Ignore insecure directories and continue [y] or abort compinit [n]?

Additionally, if you receive "zsh compinit: insecure directories" warnings when attempting
to load these completions, you may need to run this
  chmod -R go-w '/usr/local/share/zsh'

$ chmod -R go-w '/usr/local/share/zsh'
$ source ~/.zshrc
// 何も表示されなくなった！

$ rm -f ~/.zcompdump; compinit