puml.sh

#!/bin/bash
# Mostly this script exists to simply make it possible/simple to do "puml.sh foo.puml" to create "foo.png" from command line.
#
# If you want it even simpler - "puml foo.puml" (no ".sh" extension) consider using an alias. 
# Here is example for .bash_profile: 
#    alias puml=~/bin/puml.sh

for ARG in "$@"
do
   if [ "$ARG" = "v" ]; then
      echo "Autoview enabled"
      VIEW_PUML_OUTPUT_AUTOMATICALLY=$true
   else
      PUML=$ARG
      PNG="${PUML%.*}.png"
      if [ -f "$PUML" ]; then
         # 💘➜↓↳⇢➤🏹➡️ ➡
         echo "Compiling $PUML ➡️  $PNG"
         java -jar ~/bin/plantuml.jar $PUML
         if [ -z "$VIEW_PUML_OUTPUT_AUTOMATICALLY" ]; then
            echo "Opening $PNG"
            open -g "$PNG"
         fi
      else
         echo "$PUML not found."
      fi
   fi
done