diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..e4ba11e
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,7 @@
+# Force LF line endings for shell scripts.
+# Without this, Windows clones (git's core.autocrlf=true default) check out
+# CRLF and the shebang dies with:  /usr/bin/env: 'bash\r': No such file or directory  (exit 127)
+# Keep every *.sh blob byte-clean; existing clones need a forced re-checkout
+# (rm -f .git/index && git reset --hard HEAD) because git does not rewrite a
+# file whose blob is unchanged.
+*.sh text eol=lf