new file mode 100755
--- /dev/null
+++ b/scripts/control/install-ocst
@@ -0,0 +1,234 @@
+#!/bin/sh
+#
+# install-ocst   --   install/update Octave Controls Toolbox (OCST)
+#                    of A. Scottedward Hodel <A.S.Hodel@Eng.Auburn.EDU>
+#
+# This script uses chunks of "install-octave"
+# from John W. Eaton <jwe@bevo.che.wisc.edu>
+#
+# Kai P Mueller <mueller@ifr.ing.tu-bs.-de>, TU Braunschweig
+# 11/22/97 initial version
+#
+
+if [ $# -ne 1 ]
+then
+  echo
+  echo "    usage: $0 (help | all | select)"
+  echo
+  exit 1
+fi
+
+case $1 in
+
+  help)
+    cat << EOF
+==========================================================================
+  install-ocst attempts to install (or update) the OCST (Octave controls
+  toolbox) of your version of Octave.
+
+   The files in the subdirectories "general", "linear-algebra",
+   "strings", "plot", and "control" will be copied to the Octave data
+   directories with proper permissions.
+
+   If the file "obsolete.files" exists this script file fill
+   ask if the files listed in "obsolete.files" should be removed.
+
+   The install and update procedures differ in the way they perform the
+   copy of the  files in this OCST version.
+
+   o all     Copy all files to the Octave data directories assuming that
+             this version is newer. Install does not ask any questions.
+	     This modfe is best if you are the system administrator you
+	     just want to install the control stuff.
+
+   o select  Copy all files but ask before replacing an existing file
+             which differs from the one in this distribution. The update
+	     mode is appropriate for developers. New files will be
+	     copied without confirmation.
+	     Note: it can be very annoying to confirm the replacements.
+==========================================================================
+EOF
+    exit 0
+    ;;
+
+  all)
+    ask=no
+    ;;
+
+  select)
+    ask=yes
+    ;;
+
+  *)
+    echo
+    echo "    usage: $0 (help | all | select)"
+    echo
+    exit 1
+    ;;
+esac
+
+if [ `whoami` != root ]
+then
+  echo -n " * You should execute install-ocst as root, continue anyway? [n]: "
+  read ans
+  case "$ans" in
+    y | Y | yes | YES)
+    ;;
+    *)
+      exit 1
+    ;;
+  esac
+fi
+
+# change location of the distribution file here:
+ocst_version=1.2
+datadir=/usr/local/share
+oct_version=2.0.12
+
+echo
+echo " - This is the OCST V$ocst_version update procedure -"
+
+# change everything below at your own risk.
+# check data directory
+echo
+echo -n " * Octave data dir is $datadir/octave; is that correct? [y]: "
+read ans
+case "$ans" in
+  n | N | no | NO)
+    echo -n " * Enter Octave data dir (without /octave/...): "
+    read datadir
+  ;;
+esac
+if [ ! -d "$datadir/octave" ]
+then
+  echo "install-ocst: Octave dir ($datadir/octave) does not exist - Goodbye."
+  exit 1
+fi
+
+# check Octave version
+echo
+echo -n " * Octave version is $oct_version; is that correct? [y]: "
+read ans
+case "$ans" in
+  n | N | no | NO)
+    echo -n " * Enter Octave version: "
+    read oct_version
+  ;;
+esac
+toplevel=$datadir/octave/$oct_version/m
+if [ ! -d $toplevel ]
+then
+echo "install-ocst: toplevel dir ($toplevel) does not exist - Goodbye."
+  exit 1
+fi
+
+# perform installation
+echo
+echo -n " * This is your last chance to quit, continue installation? [y]: "
+read ans
+case "$ans" in
+  n | N | no | NO)
+    echo "install-ocst aborted."
+    exit 0
+  ;;
+esac
+
+echo
+distdir=`pwd`
+for dd in general linear-algebra strings plot control
+do
+  if [ -d "$dd" ]
+  then
+    echo " o installing files in $dd..."
+    cd $dd
+    for ff in `ls`
+    do
+      if [ $ask = yes ]
+      then
+        if [ -e "$toplevel/$dd/$ff" ]
+	then
+	  diff $ff "$toplevel/$dd/$ff" > /dev/null
+	  if [ "$?" = 0 ]
+	  then
+	    # files are identical; do not copy
+	    echo "---> $ff  (same version does already exist, no replacement)"
+	  else
+	    # file already exit, our version is (possible) newer
+            echo -n " * Replace existing $ff? [y]: "
+            read ans
+            case "$ans" in
+              n | N | no | NO)
+	        echo "---> $ff skipped."
+              ;;
+              *)
+                cp $ff $toplevel/$dd
+                chmod 644 $toplevel/$dd/$ff
+              ;;
+            esac
+	  fi
+	else
+	  echo "---> $ff  (new file)"
+          cp $ff $toplevel/$dd
+          chmod 644 $toplevel/$dd/$ff
+	fi
+      else
+        # copy everything without asking
+        cp $ff $toplevel/$dd
+        chmod 644 $toplevel/$dd/$ff
+      fi
+    done
+    echo "   ...files in $dd installed."
+  fi
+  cd $distdir
+done
+
+# check for "obsolete.files"
+if [ ! -r obsolete.files ]
+then
+  echo " o No obsolete files."
+else
+  echo " o removing obsolete files..."
+  flist=`cat obsolete.files`
+  for ff in $flist
+  do
+    dfile=$toplevel/$ff
+    if [ ! -e "$dfile" ]
+    then
+      echo " * no obsolete file: $ff"
+    else
+      echo -n " * remove $ff? [n]: "
+      read ans
+      case "$ans" in
+        y | Y | yes | YES)
+          rm $dfile
+        ;;
+      esac
+    fi
+  done
+fi
+
+echo
+echo "   All files have been installed. Now to the final question:"
+echo
+
+echo -n " * Replace/create ls-R file? [y]: "
+read ans
+case "$ans" in
+  n | N | no | NO)
+    echo "--> no new ls-R file."
+  ;;
+  *)
+    if [ -d "$datadir/libexec" ]
+    then
+      echo "install-ocst: libexec directory found."
+      ls -LR $datadir/octave $libexecdir/octave > $datadir/octave/ls-R
+    else
+      echo "install-ocst: libexec directory not found."
+      echo "              (you can safely ingnore this message.)"
+      ls -LR $datadir/octave > $datadir/octave/ls-R
+    fi
+  ;;
+esac
+
+echo "Thank you for using install-ocst."
+exit 0