--- installpkg.orig	2004-05-30 01:20:34.000000000 +0100
+++ sbin/installpkg	2006-07-12 22:22:40.000000000 +0100
@@ -194,8 +194,8 @@
     mkdir -p $TMP/scan$$
     ( cd $TMP/scan$$ ; $TAR xzf - install ) < $1 2> /dev/null 
     if [ -r $TMP/scan$$/install/doinst.sh ]; then
-      if cat $TMP/scan$$/install/doinst.sh | grep ' rm -rf ' 1>/dev/null 2>/dev/null ; then
-        cat $TMP/scan$$/install/doinst.sh | grep ' rm -rf ' > $TMP/scan$$/install/delete
+      if grep ' rm -rf ' $TMP/scan$$/install/doinst.sh 1>/dev/null 2>/dev/null ; then
+        grep ' rm -rf ' $TMP/scan$$/install/doinst.sh > $TMP/scan$$/install/delete
         echo "The following locations will be completely WIPED OUT to allow symbolic"
         echo "links to be made. (We're talking 'rm -rf') These locations may be files,"
         echo "or entire directories.  Be sure you've backed up anything at these"
@@ -314,12 +314,12 @@
   COMPRESSED="`expr $COMPRESSED / 1024` K"
   UNCOMPRESSED="`expr $UNCOMPRESSED / 1024` K"
 #  MD5SUM=`md5sum $package | cut -f 1 -d ' '`
-  cat $DESCRIPTION | grep "^$packagebase:" | cut -f 2- -d : | cut -b2- 1> $TMP/tmpmsg$$ 2> /dev/null
+  grep "^$packagebase:" $DESCRIPTION | cut -f 2- -d : | cut -b2- 1> $TMP/tmpmsg$$ 2> /dev/null
   if [ "$shortname" != "$packagebase" ]; then
-    cat $DESCRIPTION | grep "^$shortname:" | cut -f 2- -d : | cut -b2- 1>> $TMP/tmpmsg$$ 2> /dev/null
+     grep "^$shortname:" $DESCRIPTION | cut -f 2- -d : | cut -b2- 1>> $TMP/tmpmsg$$ 2> /dev/null
   fi
   # Adjust the length here.  This allows a slack-desc to be any size up to 13 lines instead of fixed at 11.
-  LENGTH=`cat $TMP/tmpmsg$$ | wc -l`
+  LENGTH=`wc -l < $TMP/tmpmsg$$`
   while [ $LENGTH -lt 12 ]; do
     echo >> $TMP/tmpmsg$$
     LENGTH=`expr $LENGTH + 1`
@@ -353,9 +353,9 @@
       echo "Installing package $shortname ($PMSG)... "
     fi
     echo "PACKAGE DESCRIPTION:"
-    cat $DESCRIPTION | grep "^$packagebase:" | uniq
+    grep "^$packagebase:" $DESCRIPTION | uniq
     if [ "$shortname" != "$packagebase" ]; then
-      cat $DESCRIPTION | grep "^$shortname:" | uniq
+      grep "^$shortname:" $DESCRIPTION | uniq
     fi
   elif [ "$MODE" = "infobox" -a ! "$PRIORITY" = "SKP" ]; then # install non-SKP infobox package
     dialog --title "Installing package ==>$shortname<== $PMSG" --infobox "`cat $TMP/tmpmsg$$`" 0 0
@@ -397,7 +397,7 @@
     rm -f $TMP/tmplist$$
     continue
   fi
-  cat $TMP/tmplist$$ | grep -v "/$" | while read file ; do
+   grep -v "/$" $TMP/tmplist$$ | while read file ; do
     if [ -L "$ROOT/$file" ]; then
       rm -f "$ROOT/$file"
     fi
@@ -411,20 +411,20 @@
   echo "PACKAGE LOCATION: $package" >> $ADM_DIR/packages/$shortname
 #  echo "PACKAGE MD5SUM: $MD5SUM" >> $ADM_DIR/packages/$shortname
   echo "PACKAGE DESCRIPTION:" >> $ADM_DIR/packages/$shortname
-  cat $DESCRIPTION | grep "^$packagebase:" >> $ADM_DIR/packages/$shortname 2> /dev/null
+  grep "^$packagebase:" $DESCRIPTION >> $ADM_DIR/packages/$shortname 2> /dev/null
   if [ "$shortname" != "$packagebase" ]; then
-    cat $DESCRIPTION | grep "^$shortname:" >> $ADM_DIR/packages/$shortname 2> /dev/null
+    grep "^$shortname:" $DESCRIPTION >> $ADM_DIR/packages/$shortname 2> /dev/null
   fi
   echo "FILE LIST:" >> $ADM_DIR/packages/$shortname
   ( cd $ROOT/ ; $TAR -xzlUpvf - ) < $package >> $TMP/$shortname 2> /dev/null
-  if [ "`cat $TMP/$shortname | grep '^./' | wc -l | tr -d ' '`" = "1" ]; then
+  if [ "`grep '^./' $TMP/$shortname | wc -l | tr -d ' '`" = "1" ]; then
     # Good.  We have a package that meets the Slackware spec.
     cat $TMP/$shortname >> $ADM_DIR/packages/$shortname
   else
     # Some dumb bunny built a package with something other than makepkg.  Bad!
     # Oh well.  Bound to happen.  Par for the course.  Fix it and move on...
     echo './' >> $ADM_DIR/packages/$shortname
-    cat $TMP/$shortname | grep -v '^./$' | cut -b3- >> $ADM_DIR/packages/$shortname
+    grep -v '^./$' $TMP/$shortname | cut -b3- >> $ADM_DIR/packages/$shortname
   fi
   rm -f $TMP/$shortname
 
@@ -435,7 +435,10 @@
     if [ "$MODE" = "install" ]; then
       echo "Executing install script for $shortname..."
     fi
-    ( cd $ROOT/ ; sh install/doinst.sh -install; )
+    # This tonne of sed is to avoid spawning subshells which is slow on ARM:
+    # the /proc/self stuff is because I couldn't work out how to specify '-install' as an argument
+    # when piping code into the shell.
+    ( cd $ROOT/ ; sed -e's?^( cd \([^;]*\);\(.*\) )$?pushd \1 \&\> /dev/null ; \2 ; popd \&\> /dev/null?g ' install/doinst.sh | sh /proc/self/fd/0 -install ; )
   fi 
   # Clean up the mess...
   if [ -d $ROOT/install ]; then