Fixed #61 : SheerkaDebugManager: Add get_value()

Fixed #60 : Hash error when ReturnValue is a list of list
Fixed #59 : Implement smart_get()
Fixed #58 : SheerkaPromptCompleter: Cannot parse concept token
Fixed #57 : SheerkaPrompt: Add concept autocompletion
Fixed #56 : automatically backup command
Fixed #54 : I can record execution status
Fixed #53 : ConceptManager: modify_concept fails

utils/sheerka.reset.sh

@@ -1,5 +1,33 @@
-#!/bin/sh
+#!/bin/bash
 
+list_available() {
+    available=$(find $HOME/.sheerka_* -maxdepth 0 -type d | awk -F_ '{ print "    "$2}') 2> /dev/null
+
+    if [ "$available" = "" ]; then
+        echo "Error. No available environment !" >&2
+    else
+        echo "Available environment are:"
+        for backup in ${available}; do
+            echo "    ${backup}";
+        done
+    fi
+
+}
+
+usage() {
+    echo "Usage: $0 [environment]"
+    echo "Resetting Sheerka environment from a previously build."
+    echo "If no environment is set, create a fresh install of Sheerka from scratch."
+    list_available
+    exit 0
+}
+
+if [ "$1" = "-h" ]; then
+    usage
+fi
+
+# No environment provided.
+# Create a new environment from scratch (by simply removing .sheerka folder)
 if [ "$#" -eq 0 ]; then
     echo "Resetting Sheerka environment."
     rm -rf ~/.sheerka
@@ -8,9 +36,7 @@ fi
 
 if ! [ -e "$HOME/.sheerka_$1" ]; then
   echo "$HOME/.sheerka_$1 not found" >&2
-  available=$(ls -d $HOME/.sheerka_* | awk -F_ '{ print "    "$2}')
-  echo "Available environments are:"
-  echo "$available"
+  list_available
   exit 1
 fi