zsh: add brightness aliasHEADmaster

1 files changed, 20 insertions, 0 deletions

diff --git a/zshrc b/zshrc
index f0a390b..3148f77 100644
--- a/zshrc
+++ b/zshrc
@@ -519,6 +519,26 @@ function cdn {
     cd "$(locate-dominating-file "$PWD" "$1")"
 }
 
+# Adjust monitor brightness using ddcutil
+function brightness {
+    local -r level="${1:-}"
+    if ! command -v ddcutil > /dev/null; then
+        echo "$0: ddcutil not found in path" 1>&2
+        return 1
+    fi
+    if [[ -z "$level" ]]; then
+        local current_level
+        current_level="$(ddcutil getvcp 10 | sed -E 's/.* current value = *([0-9]+),.*/\1/')"
+        echo "$0: current level: $current_level"
+    elif [[ ! "$level" =~ ^([0-9]|[1-9][0-9]+)$ || "$level" -gt 100 ]]; then
+        echo "$0: level must be a number between 0 and 100" 1>&2
+        return 1
+    else
+        echo "$0: changing level to $level"
+        ddcutil setvcp 10 "$level"
+    fi
+}
+
 #
 # Local configuration
 #