1 files changed, 52 insertions, 0 deletions
diff --git a/toys/posix/env.c b/toys/posix/env.c
new file mode 100644
index 00000000..7cda85f9
--- /dev/null
+++ b/toys/posix/env.c
@@ -0,0 +1,52 @@
+/* vi: set sw=4 ts=4:
+ *
+ * env.c - Set the environment for command invocation.
+ *
+ * Copyright 2012 Tryn Mirell <tryn@mirell.org>
+ * env.c
+
+USE_ENV(NEWTOY(env, "^i", TOYFLAG_USR|TOYFLAG_BIN))
+
+config ENV
+	bool "env"
+	default y
+	help
+          usage: env [-i] [NAME=VALUE...] [command [option...]]
+
+          Set the environment for command invocation.
+
+	  -i	Clear existing environment.
+*/
+
+#include "toys.h"
+
+extern char **environ;
+
+void env_main(void)
+{
+    char **ev;
+    char **command = NULL;
+    char *del = "=";
+    
+    if (toys.optflags & 1) clearenv();
+    
+    for (ev = toys.optargs; *ev != NULL; ev++) {
+        char *env, *val = NULL;
+        
+        env = strtok(*ev, del);
+        
+        if (env) val = strtok(NULL, del);
+        
+        if (val) setenv(env, val, 1);
+        else {
+            command = ev;
+            break;
+        }
+    }
+    
+    if (!command) {
+        char **ep;
+        for (ep = environ; *ep; ep++) xputs(*ep);
+        return;
+    } else xexec(command);
+}