added xrandr-monitor.sh get-by-edid-checksum script

1 files changed, 28 insertions, 0 deletions

diff --git a/xrandr-monitor.sh b/xrandr-monitor.sh
new file mode 100755
index 0000000..c11d79a
--- /dev/null
+++ b/xrandr-monitor.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+set -e
+
+MONITORS=$(xrandr --query | grep -oE '^[a-zA-Z0-9]{3,8} connected' | cut -d ' ' -f 1)
+GET_BY_CHKSM=${1:-}
+GOT_MONITOR=0
+
+for mon in ${MONITORS}; do
+	EDID=$(xrandr --props | grep "^${mon}" -A 10 | grep -oE '[a-fA-F0-9]{32}')
+	EDID_CHKSM=$(printf "%s" "${EDID}" | sha512sum | cut -d ' ' -f 1)
+
+	if [ "x${GET_BY_CHKSM}" = "x${EDID_CHKSM}" ]; then
+		printf "%s" "${mon}"
+		GOT_MONITOR=$((${GOT_MONITOR} + 1))
+	elif [ "x${GET_BY_CHKSM}" = "x" ]; then
+		printf "Monitor: '%s'\n" "${mon}"
+		if [ "x${EDID}" != x ]; then
+			printf "[EDID]\n%s\n" "${EDID}"
+			printf "Chksm: %s\n" $(printf "%s" "${EDID}" | sha512sum | cut -d ' ' -f 1)
+		fi
+	fi
+done
+
+if [ "x${GET_BY_CHKSM}" != "x" -a ${GOT_MONITOR} -eq 0 ]; then
+	printf "%s" "unknown"
+	exit 1
+fi