diff --git a/set-variables-in-env.js b/set-variables-in-env.js
new file mode 100644
index 00000000..7054b6c9
--- /dev/null
+++ b/set-variables-in-env.js
@@ -0,0 +1,24 @@
+const yargs = require('yargs');
+// const tmp = require('tmp');
+const fs = require('fs');
+const path = require('path');
+
+const argv = yargs.argv;
+const tempFile = `.temp-var-file.ts`;
+
+if(argv.set) {
+    const envFile = argv.set;
+
+    console.log(`Backuping up '${envFile}' into '${tempFile}'.`);
+    fs.copyFileSync(envFile, tempFile);
+    const content = fs.readFileSync(envFile, "utf8");
+    const variables = `solarputty_download_url: '${process.env.SOLARPUTTY_DOWNLOAD_URL}',`
+    const replaced = content.replace('//ENV', variables);
+    fs.writeFileSync(envFile, replaced);
+}
+
+if(argv.unset) {
+    const envFile = argv.unset;
+    console.log(`Restoring '${tempFile}' into '${envFile}'.`);
+    fs.copyFileSync(tempFile, envFile);
+}
\ No newline at end of file