diff --git a/bin/file-age b/bin/file-age
new file mode 120000
index 0000000..739f6e6
--- /dev/null
+++ b/bin/file-age
@@ -0,0 +1 @@
+../files/file-age
\ No newline at end of file
diff --git a/files/file-age b/files/file-age
new file mode 100755
index 0000000..a16dac4
--- /dev/null
+++ b/files/file-age
@@ -0,0 +1,48 @@
+#!/bin/bash
+
+_help() {
+  echo '
+Usage: file-age {file} [units]
+
+  Checks file modification date, and the current time. Prints the age of
+  the file in [units].
+  
+  [units] is one of S,M,H,d,w,m,y
+          seconds is the default. All values floored.
+          month = 30 days
+          year = 365 days
+'
+exit
+}
+for (( i=1; i<=$#; i++ ))
+do  [[ "${!i}" = "-h" ]] && _help
+done
+
+STATFILE="$1"
+[[ -z "$STATFILE" ]] && _help
+test -e "$STATFILE" || { echo File "$STATFILE" does not exist >&2; exit 1; }
+
+UNITS=${2:-S}
+created=$( stat -c %Y "$STATFILE" )
+now=$( date +%s )
+age=$(( $now - $created ))
+
+case $UNITS in
+  S)
+    echo $age;;
+  M)
+    echo $(( $age / 60 ));;
+  H)
+    echo $(( $age / 3600 ));;
+  d)
+    echo $(( $age / 86400 ));;
+  w)
+    echo $(( $age / 604800 ));;
+  m)
+    echo $(( $age / 2592000 ));;
+  y)
+    echo $(( $age / 31536000 ));;
+  *)
+    echo Unit $UNITS not recognized.
+    _help;;
+esac
diff --git a/rc b/rc
index 04c5ad2..49798fa 100755
--- a/rc
+++ b/rc
@@ -42,23 +42,6 @@ function _check_ncsv() {
     }
 }
 
-function _change_hg_repo() {
-    [[ -w "$TOOLSPATH"/.hg ]] || return
-    [[ -w "$TOOLSPATH"/.hg/hgrc ]] || return
-    grep -q moonq.kapsi.fi/repo/ "$TOOLSPATH"/.hg/hgrc && {
-        echo -e "Converting read only repository to bitbucket\n"
-        sed 's,\s*default\s*=.*moonq.kapsi.fi.*,default = https://bitbucket.org/MoonQ/tools,' "$TOOLSPATH"/.hg/hgrc \
-                | diff  "$TOOLSPATH"/.hg/hgrc -
-        sed -i 's,\s*default\s*=.*moonq.kapsi.fi.*,default = https://bitbucket.org/MoonQ/tools,' "$TOOLSPATH"/.hg/hgrc
-    }
-    grep -q moonq.kapsi.fi/repoz/ "$TOOLSPATH"/.hg/hgrc && {
-        echo -e "Converting writable repository to bitbucket\n"
-        sed 's,\s*default\s*=.*moonq.kapsi.fi.*,default = ssh://hg@bitbucket.org/MoonQ/tools,' "$TOOLSPATH"/.hg/hgrc \
-                | diff  "$TOOLSPATH"/.hg/hgrc -
-        echo
-        sed -i 's,\s*default\s*=.*moonq.kapsi.fi.*,default = ssh://hg@bitbucket.org/MoonQ/tools,' "$TOOLSPATH"/.hg/hgrc
-    }
-}
 # install ncsv if necessary
 which ncsv > /dev/null 2>&1 || _check_ncsv > /dev/null 2>&1
 unset -f _check_ncsv
@@ -79,13 +62,11 @@ TOOLS_TO_UPDATE=1
 [[ -w "$TOOLSPATH"/.lastupdate ]] || TOOLS_TO_UPDATE=0
 
 if [ $TOOLS_TO_UPDATE -eq 1 ]; then 
-  _change_hg_repo
-  TOOLS_LASTUPDATE=$(( $( date +%s ) - $( stat -c %Y "$TOOLSPATH"/.lastupdate ) ))
-  [[ "$TOOLS_LASTUPDATE" -gt 604800 ]] && _self_update 
+  TOOLS_LASTUPDATE=$( "$TOOLSPATH"/bin/file-age "$TOOLSPATH"/.lastupdate d )
+  [[ "$TOOLS_LASTUPDATE" -gt 7 ]] && _self_update 
   unset TOOLS_LASTUPDATE
 fi
 unset TOOLS_TO_UPDATE
 unset -f _self_update
-unset -f _change_hg_repo