Made command line options more POSIX-like.

wled

@@ -6,9 +6,28 @@
 # Author: Shy
 # License: CC0
 
+COMMAND="wled"
+VERSION="0.0.1"
+
 print_usage() {
-    echo "Usage: $0 f(nordcenter)|w(ohnzimmer) on|off|1-17|list"
+    echo "\
-    echo "       $0 f(nordcenter)|w(ohnzimmer) b(rightness) 1-255"
+Usage: $COMMAND -f|-w [on|off]
+       $COMMAND -f|-w [1-17|list]
+       $COMMAND -f|-w -b [1-255]"
+}
+
+print_help() {
+    print_usage
+    echo "
+host selection:
+    -f,--fnordcenter        select fnordcenter
+    -w,--wohnzimmer         select wohnzimmer
+
+commands:
+    on|off                  switch on/off
+    [1-17]                  switch preset
+    l, list                 list presets
+    -b,--brightness [1-255] set brightness"
 }
 
 curl_cmd() {
@@ -17,14 +36,18 @@ curl_cmd() {
 
 # Parse host argument.
 case "$1" in
-    ""|-h|--h) # Missing host parameter.
+    ""|-h|--help) # Missing host parameter.
-        print_usage
+        print_help
         exit 0
     ;;
-    f|fnordcenter)
+    -v|--version)
+        echo "wled.sh version $VERSION"
+        exit 0
+    ;;
+    -f|--fnordcenter)
         wled_host='wled-fnordcenter.local'
     ;;
-    w|wohnzimmer)
+    -w|--wohnzimmer)
         wled_host='wled-wohnzimmer.local'
     ;;
     *) # Unknown host parameter.
@@ -42,7 +65,7 @@ case "$2" in
     off) # Switch off.
         api_resp=$(curl_cmd --json '{"on":false}' "http://$wled_host/json")
     ;;
-    b|brightness) # Set brightness.
+    -b|--brightness) # Set brightness.
         if test -z "$3"; then
             echo "Error: missing parameter for brightness." >&2
             exit 1