some bash optimisations

install.sh

@@ -31,7 +31,7 @@ command_exists() {
 
 # ─< Check if the user is root and set sudo variable if necessary >───────────────────────
 check_root() {
-  if [ "$(id -u)" -ne 0 ]; then
+  if (( EUID != 0 )); then
     if command_exists sudo; then
       echo_info "User is not root. Using sudo for privileged operations."
       _sudo="sudo"
@@ -47,40 +47,36 @@ check_root() {
 
 # ─< Distribution detection and installation >────────────────────────────────────────
 get_packager() {
-  if [ -e /etc/os-release ]; then
-    echo_info "Detecting distribution..."
-    . /etc/os-release
+  pkger=(
+    "apt"
+    "pacman"
+    "dnf"
+    "apk"
+    "zypper"
+  )
 
-    ID=$(printf "%s" "$ID" | tr '[:upper:]' '[:lower:]')
-    ID_LIKE=$(printf "%s" "$ID_LIKE" | tr '[:upper:]' '[:lower:]')
-    case "$ID" in
-    ubuntu | pop) _install() { $_sudo apt-get install --assume-yes "$@"; } ;;
-    debian) _install() { $_sudo apt-get install --assume-yes "$@"; } ;;
-    fedora) _install() { $_sudo dnf install -y "$@"; } ;;
-    alpine) _install() { $_sudo apk add "$@"; } ;;
-    arch | archcraft | manjaro | garuda | endeavour) _install() { $_sudo pacman -S --noconfirm "$@"; } ;;
-    opensuse*) _install() { $_sudo zypper in -y "$@"; } ;;
-    *)
-      if echo "$ID_LIKE" | grep -q "debian"; then
+  for pkger in "${pkger[@]}"; do
+    if command_exists "$pkger"; then
+      echo_info "Found package manager: $pkger"
+      case "$pkger" in
+      "apt")
         _install() { $_sudo apt-get install --assume-yes "$@"; }
-      elif echo "$ID_LIKE" | grep -q "ubuntu"; then
-        _install() { $_sudo apt-get install --assume-yes "$@"; }
-      elif echo "$ID_LIKE" | grep -q "arch"; then
+        ;;
+      "pacman")
         _install() { $_sudo pacman -S --noconfirm "$@"; }
-      elif echo "$ID_LIKE" | grep -q "fedora"; then
+        ;;
+      "dnf")
         _install() { $_sudo dnf install -y "$@"; }
-      elif echo "$ID_LIKE" | grep -q "suse"; then
+        ;;
+      "apk")
+        _install() { $_sudo apk add "$@"; }
+        ;;
+      "zypper")
         _install() { $_sudo zypper in -y "$@"; }
-      else
-        echo_error "Unsupported distribution: $ID"
-        return 1
-      fi
         ;;
       esac
-  else
-    echo_error "Unable to detect distribution. /etc/os-release not found."
-    return 1
     fi
+  done
 }
 
 silentexec() {
@@ -91,22 +87,22 @@ __pre_stow__() {
   echo_note "__pre_stow__"
   conf="$HOME/.config"
   bak_dir="$HOME/.bak"
-  dirs="
-  btop
-  zsh
-  gBar
-  caja
-  yazi
-  fastfetch
-  hypr
-  kitty
-  neovide
-  rofi
-  swaync
-  waybar
-  wlogout
-  wob
-  "
+  dirs=(
+    "btop"
+    "zsh"
+    "gBar"
+    "caja"
+    "yazi"
+    "fastfetch"
+    "hypr"
+    "kitty"
+    "neovide"
+    "rofi"
+    "swaync"
+    "waybar"
+    "wlogout"
+    "wob"
+  )
 
   if [ ! -d "$bak_dir" ]; then
     echo_info "backup dir created at $bak_dir" &&
@@ -116,32 +112,32 @@ __pre_stow__() {
       rm -rf "${bak_dir:?}/*"
   fi
 
-  for _dirs in $dirs; do
+  for _dirs in "${dirs[@]}"; do
     if [ -d "$conf/$_dirs" ]; then
       mv -f "$conf/$_dirs" "$bak_dir"
     fi
   done
 
-  h_files="
-  .zshrc
-  .tmux.conf
-  .wezterm.lua
-  "
+  h_files=(
+    ".zshrc"
+    ".tmux.conf"
+    ".wezterm.lua"
+  )
 
-  h_dirs="
-  .tmux
-  .zsh
-  .icons
-  .themes
-  "
+  h_dirs=(
+    ".tmux"
+    ".zsh"
+    ".icons"
+    ".themes"
+  )
 
-  for _f in $h_files; do
+  for _f in "${h_files[@]}"; do
     if [ -f "$HOME/$_f" ]; then
       mv -f "$HOME/$_f" "$bak_dir" && echo_info "Moved $_f to $bak_dir"
     fi
   done
 
-  for _d in $h_dirs; do
+  for _d in "${h_dirs[@]}"; do
     if [ -d "$HOME/$_d" ]; then
       mv -f "$HOME/$_d" "$bak_dir" && echo_info "Moved $_d to $bak_dir"
     fi
@@ -282,7 +278,6 @@ pkg_optional() {
     echo default
     ;;
   esac
-
 }
 
 __stow__() {
@@ -318,7 +313,7 @@ main() {
 
   sleep 2
 
-  [ "$__optional__" -eq "true" ] &&
+  [ "$__optional__" = "true" ] &&
     pkg_optional
 
   __monitors__