diff --git a/.env.interactive b/.env.interactive
new file mode 100644
index 0000000..ee87390
--- /dev/null
+++ b/.env.interactive
@@ -0,0 +1,9 @@
+export ORIGINAL_PATH=$PATH
+export ORIGINAL_PS1=$PS1
+export PATH=$(dirname $BASH_SOURCE):$PATH
+export PS1="\[$(tput setaf 2)\]_euler-gerbil_\[$(tput sgr0)\]\u@\h:\w$ "
+euler_exit () {
+export PATH=$ORIGINAL_PATH
+export PS1=$ORIGINAL_PS1
+echo -e "\n\nExiting euler problems environment...\n\n\nBye!\n"
+}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..726c3ca
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.*.sw*