Add just.sh

just.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+
+# cd upwards to the justfile
+while [[ ! -e justfile ]]; do
+  if [[ $PWD = / ]] || [[ $PWD = $JUSTSTOP ]] || [[ -e juststop ]]; then
+    echo 'No justfile found.'
+    exit 1
+  fi
+  cd ..
+done
+
+# prefer gmake if it exists
+if command -v gmake > /dev/null; then
+  MAKE=gmake
+else
+  MAKE=make
+fi
+
+declare -a RECIPES
+for ARG in "$@"; do
+  test $ARG =  '--'  && shift && break
+  RECIPES+=($ARG) && shift
+done
+
+# export arguments after '--' so they can be used in recipes
+I=0
+for ARG in "$@"; do
+    export ARG$I=$ARG
+    I=$((I + 1))
+done
+
+# go!
+exec $MAKE MAKEFLAGS='' --always-make --no-print-directory -f justfile ${RECIPES[*]}