diff --git a/Makefile b/Makefile
index df863ca..658d78d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,7 @@
-install: man sh c
+all: mkc
+install: man sh mkc c
+.PHONY: man sh mkc c
+
 man:
 	mkdir -p $(DESTDIR)$(PREFIX)/man1
 	cp -f *.1 $(DESTDIR)$(PREFIX)/man1
@@ -6,6 +9,11 @@ sh:
 	mkdir -p $(DESTDIR)$(PREFIX)/bin
 	cp -f scripts/paste $(DESTDIR)$(PREFIX)/bin
 	cp -f scripts/bat $(DESTDIR)$(PREFIX)/bin
-c:
+	cp -f scripts/disp $(DESTDIR)$(PREFIX)/bin
+	cp -f scripts/shime $(DESTDIR)$(PREFIX)/bin
+	cp -f scripts/wall $(DESTDIR)$(PREFIX)/bin
+	cp -f scripts/yt $(DESTDIR)$(PREFIX)/bin
+mkc:
 	cc progs/scream.c -o progs/scream
+c:
 	cp -f progs/scream $(DESTDIR)$(PREFIX)/bin
diff --git a/scripts/disp b/scripts/disp
new file mode 100755
index 0000000..c78563f
--- /dev/null
+++ b/scripts/disp
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+exists() {
+  xrandr | grep ' connected' | grep "${1}" | wc -l
+}
+
+# usual setup: thinkpad x220 on dock connected to external
+# monitor
+
+[ $(exists "HDMI2") -gt 0 ] && \
+  [ $(exists "LVDS1") -gt 0 ] && \
+  xrandr --output LVDS1 --below HDMI2 --auto && \
+  exit 0 || exit 1
+
+# thinkpad x220 connected to display on local port
+
+[ $(exists "HDMI1") -gt 0 ] && \
+  [ $(exists "LVDS1") -gt 0 ] && \
+  xrandr --output LVDS1 --below HDMI1 --auto && \
+  exit 0 || exit 1
+
+# only the thinkpad
+
+[ $(exists "HDMI2") -eq 0 ] && \
+  [ $(exists "LVDS1") -gt 0 ] && \
+  xrandr --output LVDS1 --auto && \
+  exit 0 || exit 1
+
+exit 1
diff --git a/scripts/wall b/scripts/wall
new file mode 100755
index 0000000..bb16c60
--- /dev/null
+++ b/scripts/wall
@@ -0,0 +1,42 @@
+#!/bin/sh
+
+WALLDIR="${HOME}/.share/wallpapers"
+BASECMD="feh --bg-fill"
+
+generate_wall () {
+  GENWALL=$( \
+    ls $WALLDIR | \
+    shuf -n 1
+  )
+  GENWALL="${WALLDIR}/${GENWALL}"
+}
+wall () {
+  generate_wall
+  while [ "${GENWALL}" = "${1}" ]; do
+    generate_wall
+  done
+}
+displays () {
+  displays=$(xrandr | grep ' connected' | wc -l)
+}
+check () {
+  which $1 &>/dev/null
+}
+
+cmd=""
+check "feh" || exit 1
+if check "xrandr"; then
+  displays
+  for i in $(seq 1 $displays); do
+    wall ${tmp}
+    tmp=${GENWALL}
+    echo ${GENWALL} ${i}
+    cmd="${cmd} ${GENWALL}"
+  done
+  eval ${BASECMD} ${cmd}
+else
+  generate_wall
+  eval ${BASECMD} ${GENWALL}
+fi
+unset GENWALL BASECMD tmp cmd displays i
+exit 0
diff --git a/scripts/yt b/scripts/yt
index edcd5a4..fbd2625 100755
--- a/scripts/yt
+++ b/scripts/yt
@@ -1,25 +1,41 @@
 #!/bin/sh
 
-DATFILE="${HOME}/.config/youtube/dat"
-CACHEDIR="${HOME}/.config/youtube/cache"
-tmp1=$(mktemp)
-tmp2=$(mktemp)
+[ -z "${YT_DATFILE}" ] && YT_DATFILE="${HOME}/.local/share/ytdat"
+[ -z "${YT_CACHEDIR}" ] && YT_CACHEDIR="${HOME}/.local/share/ytcache"
+ver=0.1
 
 touch $DATFILE
 mkdir -p $CACHEDIR
 
+info () {
+  printf %s "\
+yt - youtube tool
+
+=> [s]ync         - Sync RSS feeds
+=> [a]dd   [id]   - Add a channel to the list
+=> [d]el   [id]   - Remove a channel from the list
+=> [h]elp         - Show this help
+
+List file:          export DATFILE=<your file here>
+Cache directory:    export CACHEDIR=<your dir here>
+
+see yt(1) for more information on usage
+"
+}
 sync () {
-    for i in $(cat $DATFILE | tr '\n' ' '); do
+    for i in $(cat $YT_DATFILE | tr '\n' ' '); do
         torify curl -s \
         https://www.youtube.com/feeds/videos.xml?channel_id=$i\
-        > ${CACHEDIR}/$i
+        > ${YT_CACHEDIR}/$i
     done
 }
 display () {
-    for i in $(ls $CACHEDIR | tr '\n' ' '); do
-        grep \<media:title\> ${CACHEDIR}/$i | cut -c 17- | \
+    tmp1=$(mktemp)
+    tmp2=$(mktemp)
+    for i in $(ls $YT_CACHEDIR | tr '\n' ' '); do
+        grep \<media:title\> ${YT_CACHEDIR}/$i | cut -c 17- | \
         rev | cut -c 15- | rev >> $tmp1
-        grep 'link rel' ${CACHEDIR}/$i | grep 'watch' | \
+        grep 'link rel' ${YT_CACHEDIR}/$i | grep 'watch' | \
         cut -c31- | rev | cut -c4- | rev >> $tmp2
     done
     cat $tmp1 $tmp2 | pr -2t -s" | "
@@ -31,15 +47,18 @@ del () { # $1: line number of channel id
     sed -i "${1}d" $DATFILE
 }
 case $1 in
-    *"sync"*)
+    *"s"*)
         sync
         ;;
-    *"add"*)
+    *"a"*)
         [ $# -eq 2 ] && add $2
         ;;
-    *"del"*)
+    *"d"*)
         [ $# -eq 2 ] && del $2
         ;;
+    *"h"*)
+        info
+        ;;
     *)
         display
         ;;