Add utility alias for pydf

modules/utility/README.md

@@ -105,7 +105,7 @@ Aliases
 
 ### Resource Usage
 
-  - `df` displays free disk space using human readable units.
+  - `df` displays free disk space using human readable units (aliases to `pydf`, if installed).
   - `du` displays disk usage using human readable units.
   - `top` displays information about processes (aliased to `htop`, if installed).
   - `topc` displays information about processes sorted by CPU usage (`htop` not

modules/utility/init.zsh

@@ -142,7 +142,12 @@ elif (( $+commands[wget] )); then
 fi
 
 # Resource Usage
+if (( $+commands[pydf] )); then
+  alias df=pydf
+else
   alias df='df -kh'
+fi
+
 alias du='du -kh'
 
 if (( $+commands[htop] )); then