add checks and confirm, to installer.

install.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-
+INSTALLPATH="/usr/local/bin"
 
 which ()
     {
@@ -18,9 +18,54 @@ if [ $? != 0 ];then
     fi
 fi
 
-sudo cp -v src/jprog.jl /usr/local/bin/jprog
-if [ ! -f /usr/local/bin/jprog ];then
-    echo -e "/nUnable to install, please check permissions...\n"
+
+
+function checkInstall() {
+
+if [ -f ${INSTALLPATH}/jprog ];then
+    echo -e "\nJprog is successfully installed!\n"
+
 else
-    echo -e "Jprog is successfully installed!\n"
-fi
+    echo -e "\nCould not install, check permissions!\n"
+fi
+}
+
+function installProcess() {
+    if [ ! -f ${INSTALLPATH}/jprog ];then
+        echo -e -n "\nDo you want to install jprog to ${INSTALLPATH}?(Y/n): "
+        read doinstall
+
+        if [ "${doinstall}" = "y" ];then
+            echo -e "\nInstalling jprog to ${INSTALLPATH}...\n"
+            sudo cp -v src/jprog.jl ${INSTALLPATH}/jprog
+
+            checkInstall
+
+        elif [ "${doinstall}" = "n" ];then
+            exit 0;
+
+        else
+            echo -e "\nPlease enter y or n ...\n"
+        fi
+
+    elif [ -f ${INSTALLPATH}/jprog ];then
+        echo -e -n "Jprog is already installed, reinstall?(Y/n): "
+        read reinstall
+
+        if [ "${reinstall}" = "y" ];then
+            echo -e "\nRe-installing jprog to ${INSTALLPATH}...\n"
+            sudo cp -v src/jprog.jl ${INSTALLPATH}/jprog
+            checkInstall
+
+        elif [ "${reinstall}" = "n" ];then
+            exit 0;
+
+        else
+            echo -e "Please enter y or n ...\n"
+        fi
+
+    fi
+}
+
+installProcess
+