diff --git a/README.md b/README.md
index 99e7385..cb50920 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,21 @@ To see the help page of each tool, run the ./README script
 
 ## Installation
 
-1. `hg clone https://bitbucket.org/MoonQ/tools`
-2. `. tools/rc`
+1. `mkdir -p ~/lib`
+2. `hg clone https://bitbucket.org/MoonQ/tools ~/lib/tools`
+3. `. $HOME/lib/tools/rc`
+
+It is best to add the last line in your ~/.bashrc
+
+## Dependencies
+
+Many of the tools use common unix tools. Some extra tools are required. Here are
+the installation commands.
+
+```
+sudo apt-get install sqlite3 python python-magic python-pip python-gtk2 sc \
+  gnuplot wget vim rsync curl pv
+pip install --use csvkit
+
+```
 
-It is best to add the second line in your .bashrc
diff --git a/rc b/rc
index 5db830a..ec7482f 100755
--- a/rc
+++ b/rc
@@ -18,9 +18,27 @@ function _self_update() {
     [[ "$1" = "-u" ]] && {
         hg pull -u https://bitbucket.org/MoonQ/tools
     } || {
-        timeout 5 hg pull -u  hg pull https://bitbucket.org/MoonQ/tools > /dev/null 2>&1
+        timeout 10 hg pull -u https://bitbucket.org/MoonQ/tools > /dev/null 2>&1
     }
     popd > /dev/null
+    # ncsv update
+    [[ -d "$TOOLSPATH"/ncsv ]] && {
+        pushd "$TOOLSPATH"/ncsv > /dev/null
+        [[ "$1" = "-u" ]] && {
+            hg pull -u
+        } || {
+            timeout 10 hg pull -u > /dev/null 2>&1
+        }
+        popd > /dev/null
+    }
+}
+
+function _check_ncsv() {
+    [[ -d "$TOOLSPATH"/ncsv ]] || {
+        hg clone https://bitbucket.org/MoonQ/ncsv "$TOOLSPATH"/ncsv
+        ln -sfT ../ncsv/ncsv.py "$TOOLSPATH"/bin/ncsv
+        ln -sfT ../ncsv/fast-ncsv "$TOOLSPATH"/bin/fast-ncsv
+    }
 }
 
 function _change_hg_repo() {
@@ -40,9 +58,14 @@ function _change_hg_repo() {
         sed -i 's,\s*default\s*=.*moonq.kapsi.fi.*,default = ssh://hg@bitbucket.org/MoonQ/tools,' "$TOOLSPATH"/.hg/hgrc
     }
 }
+# install ncsv if necessary
+which ncsv > /dev/null 2>&1 || _check_ncsv > /dev/null 2>&1
+unset -f _check_ncsv
 
-[[ "$1" = "-u" ]] && _self_update -u
-
+[[ "$1" = "-u" ]] && { 
+    _self_update -u
+    unset -f _self_update
+}
 # Update self weekly,
 # if folder writable, if repository, if an interactive terminal, if not updated the last week
 [[ -w "$TOOLSPATH" ]] || return