if status is-interactive

  ### Functions

  function handle_colorls
    if command -sq colorls
      alias ls 'colorls -G -F'
      alias ll 'colorls -G -F -l'
      alias la 'colorls -G -F -a'
      alias lla 'colorls -G -F -l -a'
    else
      alias ls 'ls -F'
      alias la 'ls -F -a'
      alias ll 'ls -F -l'
      alias lla 'ls -F -l -a'
    end
  end

  ### All platforms

  alias_if doas sudo

  alias l 'ls'
  alias md 'mkdir'
  alias rd 'rmdir'
  alias du 'du -h'

  if command -sq tree
    alias lta 'tree -a'
    alias llta 'tree -apugsh'
  end

  if command -sq git
    alias fishupd 'pushd ~/.config/fish ; git pull ; popd'
  end

  ### Linux

  function handle_linux

    if command -sq dircolors; and test -f ~/.config/dircolors
      eval (dircolors -c ~/.config/dircolors)
    end

    alias ls 'ls --color=auto -F'
    alias la 'ls --color=auto -F -a'
    alias ll 'ls --color=auto -F -l'
    alias lla 'ls --color=auto -F -l -a'

    alias grep 'grep --color=auto'
    alias diff 'diff --color=auto'
    alias ff 'find . -type f -name'
    alias fd 'find . -type d -name'
    alias fbs 'find . -xtype l'

    alias who 'who -H -w -u'
    alias free 'free -h'
    alias df 'df -Th'
    alias ps 'ps -ejH'
    alias lsof 'lsfd'

    # If we have iproute2
    if command -sq ip
      alias ip "ip -c"
      alias sockstat "ss -4 -6 -l -r -p"

      alias_if_not route ip route
      alias_if_not ifconfig ip link
      alias_if_not netstat ss -4 -6 -l -r -p
    end

    # If we have pacman
    if command -sq pacman
      alias lspkg 'pacman -Q --color=always | rawpager'
      alias lspkgi 'pacman -Qett --color=always | rawpager'
      alias lspkgo 'pacman -Qdt'
      alias pkginfo 'pacman -Qi'
      alias pkgsearch 'pacman -Ss'
      alias whatpkg 'pacman -Qo'

      if fish_is_root_user
        alias pkgadd 'pacman -S'
        alias pkgrm 'pacman -Rs'
        alias pkgupd 'pacman -Syyu'
        alias pkgclean 'paccache -k 0 -r'
        alias confnew 'find /etc -type f -name "*.pacnew"'
      else
        alias pkgadd 'sudo pacman -S'
        alias pkgrm 'sudo pacman -Rs'
        alias pkgupd 'sudo pacman -Syyu'
        alias pkgclean 'sudo paccache -k 0 -r'
        alias confnew 'sudo find /etc -type f -name "*.pacnew"'
      end

      function is-installed
        pacman -Qq $argv &>/dev/null
      end
    end

    # If we have apk
    if command -sq apk
      alias lspkg 'apk list -I'
      alias lspkgo 'apk list -O'
      alias pkginfo 'apk info'
      alias pkgsearch 'apk search'
      alias whatpkg 'apk info -W'

      if fish_is_root_user
        alias pkgadd 'apk add'
        alias pkgrm 'apk del'
        alias pkgupd 'apk update ; apk upgrade'
        alias confnew 'find /etc -type f -name "*.apk-new"'
      else
        alias pkgadd 'doas apk add'
        alias pkgrm 'doas apk del'
        alias pkgupd 'doas sh -c "apk update ; apk upgrade"'
        alias confnew 'doas find /etc/ -type f -name "*.apk-new"'
      end

      function is-installed
        apk info -e $argv &>/dev/null
      end
    end

    # If we have systemd
    if command -sq systemctl
      alias pss "systemd-cgls"
      alias ipconfig "networkctl -a status"

      if not fish_is_root_user
        alias showdnscache "sudo resolvectl show-cache"
        alias cleardnscache "sudo resolvectl flush-caches"
      else
        alias showdnscache "resolvectl show-cache"
        alias cleardnscache "resolvectl flush-caches"
      end

      alias_if_not nslookup systemd-resolve
    end

  end # handle_linux

  ### macOS

  function handle_macos

    if test -d '/opt/homebrew/bin'
      fish_add_path --prepend --global --path '/opt/homebrew/bin'
    end

    alias ff "find . -type f -name"
    alias fd "find . -type d -name"
    alias grep "grep --color=auto"

    alias nproc "sysctl -n hw.ncpu"
    alias lsblk "diskutil list"
    alias route "netstat -nr"

    # If we have Homebrew
    if command -sq brew
      alias lspkg 'brew list ; echo ; brew info'
      alias pkginfo 'brew info'
      alias pkgsearch 'brew search'

      alias pkgadd 'brew install'
      alias pkgrm 'brew uninstall'
      alias pkgupd 'brew update ; echo ; brew upgrade'

      function is-installed
        brew list -1 | grep -q "^$argv\$"
      end
    end

    # If we have MacPorts
    if command -sq port
      alias lspkg 'port installed'
      alias lspkgo 'port list rleaves'
      alias pkginfo 'port info'
      alias pkgsearch 'port search'

      if fish_is_root_user
        alias pkgadd 'port install'
        alias pkgrm 'port uninstall'
        alias pkgupd 'port upgrade outdated'
      else
        alias pkgadd 'sudo port install'
        alias pkgrm 'sudo port uninstall'
        alias pkgupd 'sudo port upgrade outdated'
      end
    end

  end # handle_macos

  ### NetBSD

  function handle_netbsd

    handle_colorls

    alias nproc 'sysctl -n hw.ncpu'
    alias free 'vmstat'
    alias lsusb 'usbdevs'
    alias lspci 'pcictl pci0 list'
    alias lsbat 'envstat -d acpibat0'

    alias lspkg 'pkgin list'
    alias pkginfo 'pkgin pkg-descr'
    alias pkgsearch 'pkgin search'

    if fish_is_root_user
      alias pkgadd 'pkgin install'
      alias pkgrm 'pkgin remove'
      alias pkgupd 'pkgin upgrade'
      alias pkgclean 'pkgin clean'
    else
      alias pkgadd 'doas pkgin install'
      alias pkgrm 'doas pkgin remove'
      alias pkgupd 'doas pkgin upgrade'
      alias pkgclean 'doas pkgin clean'
    end

  end # handle_netbsd

  ### OpenBSD

  function handle_openbsd

    handle_colorls

    alias nproc 'sysctl -n hw.ncpu'
    alias free 'vmstat'
    alias lsof 'fstat'
    alias lsblk 'sysctl hw.disknames'
    alias lspci 'pcidump'

    alias ff 'find . -type f -name'
    alias fd 'find . -type d -name'
    alias fbs 'find . -type l'

    alias route 'netstat -nr'

    alias lspkg 'pkg_info -A'
    alias lspkgo 'pkg_info -t'
    alias pkginfo 'pkg_info'
    alias pkgsearch 'pkg_info -Q'

    if fish_is_root_user
      alias pkgadd 'pkg_add'
      alias pkgrm 'pkg_delete'
      alias pkgupd 'pkg_add -u'
    else
      alias pkgadd 'doas pkg_add'
      alias pkgrm 'doas pkg_delete'
      alias pkgupd 'doas pkg_add -u'
    end

    function is-installed
      pkg_info -q -e "$argv->=0"
    end

  end # handle_openbsd

  ### FreeBSD

  function handle_freebsd

    handle_colorls

    alias nproc "sysctl -n hw.ncpu"
    alias free "vmstat"
    alias lsusb "usbconfig list"
    alias lspci "pciconf -lv"
    alias lsmod "kldstat"
    alias insmod "kldload"

    alias pkginfo 'pkg info'

    if fish_is_root_user
      alias pkgadd 'pkg install'
      alias pkgrm 'pkg remove'
      alias pkgupd 'pkg upgrade'
      alias pkgclean 'pkg clean -a'
    else
      alias pkgadd 'doas pkg install'
      alias pkgrm 'doas pkg remove'
      alias pkgupd 'doas pkg upgrade'
      alias pkgclean 'doas pkg clean -a'
    end

  end # handle_openbsd

  switch (uname)
    case 'Linux'
      handle_linux
    case 'Darwin'
      handle_macos
    case 'OpenBSD'
      handle_openbsd
    case 'NetBSD'
      handle_netbsd
    case 'FreeBSD'
      handle_freebsd
  end

end