add chdev(1)

1 files changed, 18 insertions, 0 deletions

diff --git a/rc/bin/chdev b/rc/bin/chdev
new file mode 100755
index 000000000..9b659fe66
--- /dev/null
+++ b/rc/bin/chdev
@@ -0,0 +1,18 @@
+#!/bin/rc
+
+fn usage {
+	echo 'usage:' $0 '[ -nr ] devmask' >[1=2]
+	exit usage
+}
+
+op='&'
+while(~ $1 -*){
+	switch($1){
+	case -n; op='~'
+	case -r; op='&~'
+	case *; usage
+	}
+	shift
+}
+
+echo chdev $op $1 >> '#c/drivers'