do not reinstall if already added to path

Author: memalhot

install.sh

@@ -1,11 +1,11 @@
 #!/bin/bash
 current_dr=$(pwd)/bin
 
-#add ope tool to path so user can use in any directory
-echo " " >> ${HOME}/.bashrc
-echo "export PATH=$current_dr:\$PATH" >> ${HOME}/.bashrc
-#rerun bashrc so it's updated to have ope
-source ${HOME}/.bashrc
+#if path was not already added, add path
+if ! grep -q -s "export PATH=$current_dr:\$PATH" ~/.bashrc; then
+  echo "export PATH=$current_dr:\$PATH" >> ~/.bashrc #add it to path
+  source ~/.bashrc #rerun bashrc to reset shell
+fi
 
 #tell user ope tool has been installed
-echo "ope has been added to the path successfully"
+echo "ope has been added to the path successfully"