Code quality upgrade

This is what you get when Dave Reisner points you at some bash anti-patterns.
Also in this commit:
- updated documentation
- bugfix revision of the IPv6 SLAAC address/route bug

1 files changed, 1 insertions, 1 deletions

diff --git a/src/rfkill b/src/rfkill
index d61703d..4fbc34d 100644
--- a/src/rfkill
+++ b/src/rfkill
@@ -42,7 +42,7 @@ get_rf_state() {
     local INTERFACE="$1" PROFILE="$2" path state
 
     path=$(get_rf_path "$INTERFACE" "$RFKILL_NAME") || return 1
-    state=$(cat "$path/state")
+    read state < "$path/state"
 
     case "$state" in
         0|2)