diff --git a/commonshrc b/commonshrc
index 1a19a40..1980890 100644
--- a/commonshrc
+++ b/commonshrc
@@ -16,10 +16,3 @@ if type -t nvim >/dev/null; then
 fi
 
 export BROWSER=xdg-open
-
-alias udetokei='tokei $(rg --files)'
-
-# passc
-passc() {
-  pass show "$1" | (read i; cat; echo -n "$i" | xclip -l 1 -se c)
-}
diff --git a/nonnixshellrc b/nonnixshellrc
index 6f19737..57f5998 100644
--- a/nonnixshellrc
+++ b/nonnixshellrc
@@ -4,8 +4,8 @@
 # $MYPREFIX {{{1
 
 add_to() {
-  if [ -n "`eval echo \$\{$1\}`" ]; then
-    export $1="$2:`eval echo \$\{$1\}`"
+  if [ -n "${!1}" ]; then
+    export $1="$2:${!1}"
   else
     export $1="$2"
   fi
@@ -15,13 +15,12 @@ add_myprefix_to() {
   add_to "$1" "$MYPREFIX/$2"
 }
 
-export MYPREFIX=$HOME/.local
+MYPREFIX=$HOME/.local
 
 add_to PATH ~/.cabal/bin
 
 add_myprefix_to LD_LIBRARY_PATH lib
 
-add_to MANPATH :
 add_myprefix_to MANPATH share/man
 
 add_myprefix_to PKG_CONFIG_PATH lib/pkgconfig
@@ -29,20 +28,8 @@ add_myprefix_to PKG_CONFIG_PATH lib/pkgconfig
 add_myprefix_to PATH bin
 add_myprefix_to PATH sbin
 
-if [ -x /usr/bin/perl ]; then
-  PERLVERSION="`perl -e 'printf"%vd\n",$^V'`"
-  add_myprefix_to PERL5LIB lib/perl/$PERLVERSION
-  add_myprefix_to PERL5LIB share/perl/$PERLVERSION
-fi
-
-add_myprefix_to R_LIBS lib/R:/usr/lib/R/site-library
-
 if [ -d ~/build/android-sdk-linux ]; then
   export ANDROID_HOME=$HOME/build/android-sdk-linux
   add_to PATH $ANDROID_HOME/platform-tools:$ANDROID_HOME/tools
   export ANDROID_SDK=$ANDROID_HOME ANDROID_NDK=$HOME/build/android-ndk-r9c
 fi
-
-add_to PATH ~/.babel/bin # nimrod package manager
-
-add_to PATH ~/.gem/ruby/2.1.0/bin