diff --git a/algs4/.env b/algs4/.env
deleted file mode 100644
index 580223b..0000000
--- a/algs4/.env
+++ /dev/null
@@ -1,2 +0,0 @@
-HERE=$(dirname "$1")
-(echo "$PATH" | grep "$HERE/bin" >/dev/null 2>&1) || export PATH="$HERE/bin:$PATH"
diff --git a/algs4/.example.env b/algs4/.example.env
new file mode 100644
index 0000000..0a78dae
--- /dev/null
+++ b/algs4/.example.env
@@ -0,0 +1,6 @@
+export PATH="$HOME/src/box-o-sand/src/gotime/.installation/go/bin:$PATH"
+export PATH="$HOME/src/box-o-sand/src/algs4/bin:$PATH"
+export GOROOT="$HOME/src/box-o-sand/src/gotime/.installation/go"
+export GOPATH="$GOROOT:$HOME/src/box-o-sand/src/algs4"
+
+source "$GOROOT/misc/bash/go"
diff --git a/algs4/.gitignore b/algs4/.gitignore
index 0edb790..e0bc686 100644
--- a/algs4/.gitignore
+++ b/algs4/.gitignore
@@ -1,3 +1,4 @@
+/.env
 /algs4.jar
 /bin/
 /checkstyle-5.5/