tblobaum · July 22, 2012 13:19 · Jul 22, 2012
diff --git a/rename-redis-keys.js b/rename-redis-keys.js
@@ -0,0 +1,18 @@
+var Redis = require('redis-stream')
+  , client = new Redis(6379, 'localhost', process.argv[2] || 0)
+  , stream = client.stream()
+
+var keys = client.stream('keys')
+
+process.stdin
+  .pipe(Redis.es.split())
+  .pipe(keys)
+  .pipe(Redis.es.mapSync(function (key) { 
+    var newkey = key.replace(/user_/, 'users::')     // regex to rename key with
+    return Redis.parse([ 'rename', key, newkey ])
+  }))
+  .pipe(stream.redis)
+  .pipe(Redis.es.join('\r\n'))
+  .pipe(process.stdout)
+
+console.log('enter a `keys` pattern, e.g. *')