diff --git a/Building/Linux/OSCAR.desktop b/Building/Linux/OSCAR.desktop
old mode 100755
new mode 100644
diff --git a/Building/Linux/README.first b/Building/Linux/README.first
index 1dffd613..4116b500 100644
--- a/Building/Linux/README.first
+++ b/Building/Linux/README.first
@@ -4,8 +4,10 @@ you have already compiled and linked OSCAR using qmake and make, or QtCreator.
 The packages, once built, can be installed using 'dpkg i' or 'gdebi' - with either su or sudo. If you use
 sudo, you will get a desktop icon installed, which must be double-clicked and trusted to see the actual icon.
 
-The packaged file cannot be installed using apt, apt-get, or aptitude, because those programs 
-install from the distribution repository, but not a plan package file.
+The packaged file cannot be installed using apt-get, or aptitude, because those programs 
+install from the distribution repository, but not a plain package file.
+
+The package can be installed with apt or apt -F if the file name is preceded by ./ to force filename recognition.
 
 The packaging scripts assume the following folder structure:
 
@@ -22,6 +24,9 @@ The code to put a desktop icon in the Desktop folder, regardless of language, wa
 
 Getting a menu item istalled is largely due to the efforts of CrimsonNape.
 
+The mkDebian9.sh and mkUbuntu.sh scripts have been consolidated into mkDistDeb.sh and are now depreciated and will be removed. mkDistDeb.sh
+has code to query which packages are available for certail libraries.
+
 Finally, the mkRedHat.sh script has not been tested.
 
 
diff --git a/Building/Linux/ln_usrbin-test.sh b/Building/Linux/ln_usrbin-test.sh
index 2f522f17..fa66e44d 100755
--- a/Building/Linux/ln_usrbin-test.sh
+++ b/Building/Linux/ln_usrbin-test.sh
@@ -10,32 +10,32 @@ appli_name="OSCAR-test"
 # binary copy flag
 copy_flag=0
 
-# Select the binary file for the goog version of QT (5.7 ou 5.9)
-#echo "test the version of qt5 core version"
+#### Select the binary file for the goog version of QT (5.7 ou 5.9)
+####echo "test the version of qt5 core version"
+###
+###if [ -f "/etc/redhat-release" ]; then
+###    # pour mageia (red hat)
+###    echo "distribution : mageia (red hat)"
+###    Qt5_core=$(yum search -q qt5core5 | awk '{print $1}' | grep lib | sort -u)
+###    MajorVer_no=$(yum info $Qt5_core | grep -i "version" | awk '{print $3}' | awk -F. '{print $1}')
+###    MinorVer_no=$(yum info $Qt5_core | grep -i "version" | awk '{print $3}' | awk -F. '{print $2}')
+###
+###elif [ -f "/etc/lsb-release" ] || [ -f "/etc/debian_version" ]; then
+###    # pour debian
+####    echo "distribution : debian"
+###    Qt5_core=$(dpkg -l | awk '{print $2}'| grep qt5 | grep core | awk -F: '{print $1}')
+###    Major_ver=$(dpkg -l | grep $Qt5_core | awk '{print $3}' | awk -F. '{print $1}')
+###    Minor_ver=$(dpkg -l | grep $Qt5_core | awk '{print $3}' | awk -F. '{print $2}')
+###else
+###   echo "unknown distribution "
+###   exit
+###fi
+###
+####echo "Qt5_core  = '$Qt5_core'"
+####echo "Major_ver = $Major_ver"
+####echo "Minor_ver = $Minor_ver"
 
-if [ -f "/etc/redhat-release" ]; then
-    # pour mageia (red hat)
-    echo "distribution : mageia (red hat)"
-    Qt5_core=$(yum search -q qt5core5 | awk '{print $1}' | grep lib | sort -u)
-    MajorVer_no=$(yum info $Qt5_core | grep -i "version" | awk '{print $3}' | awk -F. '{print $1}')
-    MinorVer_no=$(yum info $Qt5_core | grep -i "version" | awk '{print $3}' | awk -F. '{print $2}')
-
-elif [ -f "/etc/lsb-release" ] || [ -f "/etc/debian_version" ]; then
-    # pour debian
-#    echo "distribution : debian"
-    Qt5_core=$(dpkg -l | awk '{print $2}'| grep qt5 | grep core | awk -F: '{print $1}')
-    Major_ver=$(dpkg -l | grep $Qt5_core | awk '{print $3}' | awk -F. '{print $1}')
-    Minor_ver=$(dpkg -l | grep $Qt5_core | awk '{print $3}' | awk -F. '{print $2}')
-else
-   echo "unknown distribution "
-   exit
-fi
-
-#echo "Qt5_core  = '$Qt5_core'"
-#echo "Major_ver = $Major_ver"
-#echo "Minor_ver = $Minor_ver"
-
-if [ -x /usr/bin/update-menus ]; then update-menus; fi
+##if [ -x /usr/bin/update-menus ]; then update-menus; fi
 
 if [ ! -z "$SUDO_USER" ]; then
     # find real name of the Desktop folder (Bureau for xubuntu french version)
diff --git a/Building/Linux/ln_usrbin.sh b/Building/Linux/ln_usrbin.sh
index a8946424..ed4f4fa3 100755
--- a/Building/Linux/ln_usrbin.sh
+++ b/Building/Linux/ln_usrbin.sh
@@ -10,38 +10,38 @@ appli_name="OSCAR"
 # binary copy flag
 copy_flag=0
 
-# Select the binary file for the goog version of QT (5.7 ou 5.9)
-echo "test the version of qt5 core version"
+#### Select the binary file for the goog version of QT (5.7 ou 5.9)
+###echo "test the version of qt5 core version"
+###
+###if [ -f "/etc/redhat-release" ]; then
+###    # pour mageia (red hat)
+###    echo "distribution : mageia (red hat)"
+###    nom_core=$(yum search -q qt5core5 | awk '{print $1}' | grep lib | sort -u)
+###    no_vermaj=$(yum info $nom_core | grep -i "version" | awk '{print $3}' | awk -F. '{print $1}')
+###    no_vermin=$(yum info $nom_core | grep -i "version" | awk '{print $3}' | awk -F. '{print $2}')
+###
+###elif [ -f "/etc/lsb-release" ] || [ -f "/etc/debian_version" ]; then
+###    # pour debian
+###    echo "distribution : debian"
+###    nom_core=$(dpkg -l | awk '{print $2}'| grep qt5 | grep core | awk -F: '{print $1}')
+###    no_vermaj=$(dpkg -l | grep $nom_core | awk '{print $3}' | awk -F. '{print $1}')
+###    no_vermin=$(dpkg -l | grep $nom_core | awk '{print $3}' | awk -F. '{print $2}')
+###else
+###   echo "unknown distribution "
+###   exit
+###fi
+###
+###echo "QT5_core  = '$nom_core'"
+###echo "Major ver = $no_vermaj"
+###echo "Minor ver = $no_vermin"
 
-if [ -f "/etc/redhat-release" ]; then
-    # pour mageia (red hat)
-    echo "distribution : mageia (red hat)"
-    nom_core=$(yum search -q qt5core5 | awk '{print $1}' | grep lib | sort -u)
-    no_vermaj=$(yum info $nom_core | grep -i "version" | awk '{print $3}' | awk -F. '{print $1}')
-    no_vermin=$(yum info $nom_core | grep -i "version" | awk '{print $3}' | awk -F. '{print $2}')
-
-elif [ -f "/etc/lsb-release" ] || [ -f "/etc/debian_version" ]; then
-    # pour debian
-    echo "distribution : debian"
-    nom_core=$(dpkg -l | awk '{print $2}'| grep qt5 | grep core | awk -F: '{print $1}')
-    no_vermaj=$(dpkg -l | grep $nom_core | awk '{print $3}' | awk -F. '{print $1}')
-    no_vermin=$(dpkg -l | grep $nom_core | awk '{print $3}' | awk -F. '{print $2}')
-else
-   echo "unknown distribution "
-   exit
-fi
-
-echo "QT5_core  = '$nom_core'"
-echo "Major ver = $no_vermaj"
-echo "Minor ver = $no_vermin"
-
-if [ -x /usr/bin/update-menus ]; then update-menus; fi
+##if [ -x /usr/bin/update-menus ]; then update-menus; fi
 
 if [ X_$SUDO_USER != "X_" ]; then
     # find real name of the Desktop folder (Bureau for xubuntu french version)
     desktop_folder_name="/home/$SUDO_USER/Desktop"
     
-    # si doesn't exist, try to find it translated name 
+    # if doesn't exist, try to find it translated name 
     tmp_dir="" 
     if [ ! -d "$desktop_folder_name" ]; then
         tmp_dir=`cat /home/$SUDO_USER/.config/user-dirs.dirs | grep XDG_DESKTOP_DIR | awk -F= '{print $2}' | awk -F\" '{print $2}' | awk -F\/ '{print $2}'`
diff --git a/Building/Linux/ln_usrlocalbin.sh b/Building/Linux/ln_usrlocalbin.sh
deleted file mode 100755
index 08043b01..00000000
--- a/Building/Linux/ln_usrlocalbin.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#! /bin/bash
-#
-mv /opt/tempDir /opt/OSCAR
-ln -s /opt/OSCAR/OSCAR /usr/bin/OSCAR
-cp /opt/OSCAR/OSCAR.desktop /home/$SUDO_USER/Desktop
-chown $SUDO_USER:$SUDO_USER /home/$SUDO_USER/Desktop/OSCAR.desktop
-chmod a+x /home/$SUDO_USER/Desktop/OSCAR.desktop
-#
diff --git a/Building/Linux/mkDebian9.sh b/Building/Linux/mkDebian9.sh
index 268296fe..8a4f6b00 100755
--- a/Building/Linux/mkDebian9.sh
+++ b/Building/Linux/mkDebian9.sh
@@ -30,7 +30,7 @@ pre_rem="rm_usrbin.sh"
 post_rem="clean_rm.sh"
 # build folder (absolute path is better)
 build_folder="/home/$USER/OSCAR/build"
-if [[ -n ${PRERELEASE}  &&  ${RC} ]] ; then
+if [[ -n ${PRERELEASE}  && -z ${RC} ]] ; then
     appli_name=${appli_name}-test
     post_inst="ln_usrbin-test.sh"
     pre_rem="rm_usrbin-test.sh"
diff --git a/Building/Linux/mkDistDeb.sh b/Building/Linux/mkDistDeb.sh
new file mode 100755
index 00000000..82282deb
--- /dev/null
+++ b/Building/Linux/mkDistDeb.sh
@@ -0,0 +1,177 @@
+#! /bin/bash
+# First parameter is optional
+#
+function getPkg () {
+    unset PKGNAME
+    unset PKGVERS
+    while read stat pkg ver other ;
+        do 
+            if [[ ${stat} == "ii" ]] ; then
+                PKGNAME=`awk -F: '{print $1}' <<< ${pkg}`
+                PKGVERS=`awk -F. '{print $1 "." $2}' <<< ${ver}`
+                break
+            fi ;
+        done <<< $(dpkg -l | grep $1)
+}
+
+ITERATION=$1
+if [  -z ${ITERATION} ]; then
+    ITERATION="1"
+fi
+
+SRC=/home/$USER/OSCAR/OSCAR-code/oscar
+
+VERSION=`awk '/#define VERSION / { gsub(/"/, "", $3); print $3 }' ${SRC}/VERSION`
+if [[ ${VERSION} == *-* ]]; then
+    # Use ~ for prerelease information so that it sorts correctly compared to release
+    # versions. See https://www.debian.org/doc/debian-policy/ch-controlfields.html#version
+    IFS="-" read -r VERSION PRERELEASE <<< ${VERSION}
+    if [[ ${PRERELEASE} == *rc* ]]; then
+        RC=1
+    fi
+    VERSION="${VERSION}~${PRERELEASE}"
+fi
+GIT_REVISION=`awk '/#define GIT_REVISION / { gsub(/"/, "", $3); print $3 }' ${SRC}/git_info.h`
+echo Version: ${VERSION}
+
+# application name
+appli_name="OSCAR"
+pre_inst="tst_user.sh"
+post_inst="ln_usrbin.sh"
+pre_rem="rm_usrbin.sh"
+post_rem="clean_rm.sh"
+# build folder (absolute path is better)
+build_folder="/home/$USER/OSCAR/build"
+if [[ -n ${PRERELEASE}  && -z ${RC} ]] ; then
+    appli_name=${appli_name}-test
+    post_inst="ln_usrbin-test.sh"
+    pre_rem="rm_usrbin-test.sh"
+    post_rem="clean_rm-test.sh"
+fi
+
+# temporary folder (absolute path is better)
+temp_folder="/home/$USER/tmp_deb_${appli_name}/"
+
+# destination folder in the .deb file
+dest_folder="/usr/"
+
+# the .deb file mustn't exist (or fpm must have -f parameter to force the creation)
+archi_tmp=$(lscpu | grep -i architecture | awk -F: {'print $2'} | tr -d " ")
+if [ "$archi_tmp" = "x86_64" ];then
+    archi="amd64"
+else
+    archi="unknown"
+fi
+deb_file="${appli_name}_${VERSION}-${ITERATION}_$archi.deb"
+
+getPkg libqt5core
+qtver=$PKGVERS
+
+getPkg libdouble
+dblPkg=$PKGNAME
+
+echo "QT version " $qtver
+echo "DblConv package " $dblPkg
+
+# if deb file exists, fatal error
+if [ -f "./$deb_file" ]; then
+    echo "destination file (./$deb_file) exists. fatal error"
+    exit 
+fi
+
+# clean folders need to create the package
+if [ -d "${temp_folder}" ]; then
+    rm -r ${temp_folder}
+fi
+mkdir ${temp_folder}
+if [ ! -d "${temp_folder}" ]; then
+    echo "Folder (${temp_folder}) not created : fatal error."
+    exit
+fi
+chmod 0755 ${temp_folder}
+# save current value of umask (for u=g and not g=o)
+current_value=$(umask)
+umask 022
+mkdir ${temp_folder}/bin
+mkdir ${temp_folder}/share
+mkdir ${temp_folder}/share/${appli_name}
+mkdir ${temp_folder}/share/doc
+share_doc_folder="${temp_folder}/share/doc/${appli_name}"
+mkdir ${share_doc_folder}
+mkdir ${temp_folder}/share/icons
+mkdir ${temp_folder}/share/icons/hicolor
+mkdir ${temp_folder}/share/icons/hicolor/48x48
+mkdir ${temp_folder}/share/icons/hicolor/48x48/apps
+mkdir ${temp_folder}/share/icons/hicolor/scalable
+mkdir ${temp_folder}/share/icons/hicolor/scalable/apps
+mkdir ${temp_folder}/share/applications
+
+# must delete debug symbol in OSCAR binary file
+# --- V1
+strip -s -o ${temp_folder}/bin/${appli_name} ${build_folder}/oscar/OSCAR
+#old code : cp ${build_folder}/oscar/OSCAR ${temp_folder}/bin
+
+# 2>/dev/null : errors does not appear : we don't care about them
+cp -r ${build_folder}/oscar/Help ${temp_folder}/share/${appli_name} 2>/dev/null
+cp -r ${build_folder}/oscar/Html ${temp_folder}/share/${appli_name} 2>/dev/null
+cp -r ${build_folder}/oscar/Translations ${temp_folder}/share/${appli_name} 2>/dev/null
+cp ./${appli_name}.png ${temp_folder}/share/icons/hicolor/48x48/apps/${appli_name}.png
+cp ./${appli_name}.svg ${temp_folder}/share/icons/hicolor/scalable/apps/${appli_name}.svg
+cp ./${appli_name}.desktop ${temp_folder}/share/applications/${appli_name}.desktop
+
+echo "Copyright 2019-2020 oscar-team.org <oscar@oscar-team.org>" > $share_doc_folder/copyright
+
+changelog_file="$share_doc_folder/changelog"
+
+#automatic changelog as a bad name
+# need to generate one and say fpm to use it instead of create one
+# it seems that it needs both of them...
+
+# creation of the changelog.Debian.gz
+echo "$appli_name (${VERSION}-${ITERATION}) whatever; urgency=medium" > $changelog_file
+echo "" >> $changelog_file
+echo "  * Package created with FPM." >> $changelog_file
+echo "" >> $changelog_file
+echo " -- oscar-team.org <oscar@oscar-team.org>" >> $changelog_file
+gzip --best $changelog_file
+description='Open Source CPAP Analysis Reporter\n<extended description needed to be filled with the right value>'
+# trick for dummies : need to use echo -e to take care of \n (cariage return to slip description and extra one
+description=$(echo -e $description)
+
+# restore umask value
+umask $current_value
+
+# create the .deb file (litian test show juste a warning with a man that doesn't exists : don't care about that)
+fpm --input-type dir --output-type deb  \
+    --prefix ${dest_folder} \
+    --before-install ${pre_inst} \
+    --after-install ${post_inst}   \
+    --before-remove ${pre_rem}   \
+    --after-remove ${post_rem} \
+    --name ${appli_name} --version ${VERSION} --iteration ${ITERATION} \
+    --category misc               \
+    --deb-priority optional \
+    --maintainer " -- oscar-team.org <oscar@oscar-team.org>"   \
+    --license GPL-v3                \
+    --vendor oscar-team.org    \
+    --description "$description" \
+    --url https://sleepfiles.com/OSCAR  \
+    --deb-no-default-config-files   \
+    --depends $dblPkg \
+    --depends libpcre16-3 \
+    --depends qttranslations5-l10n \
+    --depends 'libqt5core5a > $qtver'   \
+    --depends libqt5serialport5     \
+    --depends libqt5xml5            \
+    --depends libqt5network5        \
+    --depends libqt5gui5            \
+    --depends libqt5widgets5        \
+    --depends libqt5opengl5         \
+    --depends libqt5printsupport5   \
+    --depends libglu1-mesa          \
+    --depends libgl1                \
+    --depends libc6                 \
+    --no-deb-generate-changes \
+    -C ${temp_folder} \
+    .
+
diff --git a/Building/Linux/rm_usrlocalbin.sh b/Building/Linux/rm_usrlocalbin.sh
deleted file mode 100755
index c2a149e5..00000000
--- a/Building/Linux/rm_usrlocalbin.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-#! /bin/bash
-#
-mv /opt/OSCAR /opt/tempDir
-rm /usr/bin/OSCAR
-rm /home/$SUDO_USER/Desktop/OSCAR.desktop
-#