diff --git a/dots/bash/.bashrc b/dots/bash/.bashrc
index 2e27f81..aa53d81 100644
--- a/dots/bash/.bashrc
+++ b/dots/bash/.bashrc
@@ -68,6 +68,32 @@ screensaver() {
     fi
 }
 
+rshift() {
+    cmd="default"
+	if [[ -n $1 ]]; then
+		cmd=$1
+	fi
+
+    if [ ${cmd} == "info" ] ; then
+        echo "{morning, day, evening, night, bedtime}"
+    elif [ ${cmd} == "morning" ] ; then
+        temperature=4500
+    elif [ ${cmd} == "day" ] ; then
+        # 6500 is default temperatature
+        temperature=6500
+    elif [ ${cmd} == "evening" ] ; then
+        temperature=3500
+    elif [ ${cmd} == "night" ] ; then
+        temperature=2500
+    elif [ ${cmd} == "bedtime" ] ; then
+        temperature=1200
+    else
+        temperature=${cmd}
+    fi
+
+    redshift -P -O ${temperature}
+}
+
 # display setup
 ds11() {
     if [ $1 == "info" ] ; then