added list "installed" functionality

- check if command is yay or nano (config), otherwise command is pacman
- check if su is needed only for pacman and not yay
- check command arguments after determining command (or empty, which is default, pacman)

pman.sh

@@ -1,52 +1,94 @@
 #!/usr/bin/env bash
 
 # Store the first command line argument in the variable "command" and shift the rest
-command="$1"
+command_args="$1"
 shift
+command=""
+more_arguments=false
+su_needed=false
 
-# Evaluate the command
+# Check if yay (aur)
-if [ "$command" = "search" ]; then
+if [ "$command_args" = "yay" ] || [ "$command_args" = "aur" ]; then
-  command="pacman"
+  command="yay"
-  command_args="-Ss"
+  command_args="$1"
-elif [ "$command" = "update" ]; then
+  shift
-  command="pacman"
+  more_arguments=true
-  command_args="-Sy"
+# Check if config
-  su_needed=true
+elif [ "$command_args" = "config" ]; then
-elif [ "$command" = "upgradable" ]; then
-  command="pacman"
-  command_args="-Qu"
-elif [ "$command" = "upgrade" ]; then
-  command="pacman"
-  command_args="-Syu"
-  su_needed=true
-elif [ "$command" = "install" ]; then
-  command="pacman"
-  command_args="-S"
-  su_needed=true
-elif [ "$command" = "provides" ]; then
-  command="pacman"
-  command_args="-F"
-elif [ "$command" = "config" ]; then
   command="nano"
   command_args="/etc/pacman.conf"
   su_needed=true
-else
+fi
-  echo "Invalid command: \"$command\""
+
+# If command is empty, command is pacman
+if [ "$command" = "" ]; then
+  command="pacman"
+  more_arguments=true
+fi
+
+# Evaluate the command arguments
+if [ "$command_args" = "search" ]; then
+  command_args="-Ss"
+elif [ "$command_args" = "provides" ]; then
+  command_args="-F"
+elif [ "$command_args" = "installed" ]; then
+  command_args="-Q"
+elif [ "$command_args" = "install" ]; then
+  command_args="-S"
+  if [ "$command" = "pacman" ]; then
+    su_needed=true
+  fi
+elif [ "$command_args" = "update" ]; then
+  command_args="-Sy"
+  if [ "$command" = "pacman" ]; then
+    su_needed=true
+  fi
+elif [ "$command_args" = "upgradable" ]; then
+  command_args="-Qu"
+elif [ "$command_args" = "upgrade" ]; then
+  command_args="-Syu"
+  if [ "$command" = "pacman" ]; then
+    su_needed=true
+  fi
+elif [ "$command_args" = "remove" ]; then
+  command_args="-Rs"
+  if [ "$command" = "pacman" ]; then
+    su_needed=true
+  fi
+elif [ "$command_args" = "purge" ]; then
+  command_args="-Rns"
+  if [ "$command" = "pacman" ]; then
+    su_needed=true
+  fi
+elif [ "$more_arguments" = "true" ]; then
+  echo "Invalid command: \"$command $command_args\""
   echo
   echo "Usage: pman <command> [args...]"
   echo "Available commands:"
+  echo "  yay (aur)  - yay              | invoke yay "
+  echo "               (aur packages - all the normal operations except config are available)"
+  echo "  aur (yay)  - yay              | same as \"yay\""
   echo "  search     - pacman -Ss       | search packages"
+  echo "  provides   - pacman -F        | list packages that provide file"
+  echo "  installed  - pacman -Q        | list installed packages"
+  echo "  install    - pacman -S        | install packages"
   echo "  update     - pacman -Sy       | updates the repositories"
   echo "  upgradable - pacman -Qu       | list available upgrades"
   echo "  upgrade    - pacman -Syu      | upgrades your system"
-  echo "  provides   - pacman -F        | list packages that provide file"
+  echo "  remove     - pacman -Rs       | remove packages & dependencies"
+  echo "  purge      - pacman -Rns      | remove packages, dependencies & conf"
   echo "  config     - /etc/pacman.conf | edits pacman configuration"
   exit 1
 fi
 
-# If sudo is needed and necessary (and installed), prepend it
+# If sudo is needed and necessary (and installed), prepend it, if not installed throw error
-if [ "$su_needed" = "true" ] && [ "$UID" != 0 ] && command -v "sudo" &>/dev/null; then
+if [ "$su_needed" = "true" ] && [ "$UID" != 0 ]; then
+  if command -v "sudo" &>/dev/null; then
     sudo $command $command_args "${@}"
+  else
+    echo "sudo command needed but not found" > /dev/stderr
+    exit 1
+  fi
 else
   $command $command_args "${@}"
 fi