diff --git a/config/restore_scodoc_data.sh b/config/restore_scodoc_data.sh
index f2bd87858..e94b15111 100755
--- a/config/restore_scodoc_data.sh
+++ b/config/restore_scodoc_data.sh
@@ -15,7 +15,7 @@ SCODOC_DIR="${INSTANCE_DIR}/Products/ScoDoc"
 SCODOC_VAR_DIR="${INSTANCE_DIR}/var/scodoc"
 
 source utils.sh
-check_uid_root $0
+check_uid_root "$0"
 
 # Safety check
 echo "Ce script va remplacer les donnees de votre installation ScoDoc par celles"
@@ -28,7 +28,7 @@ echo
 echo "TOUTES LES BASES POSTGRESQL SERONT EFFACEES !!!"
 echo 
 echo -n "Voulez vous poursuivre cette operation ? (y/n) [n]"
-read ans
+read -r ans
 if [ ! "$(norm_ans "$ans")" = 'Y' ]
 then
    echo "Annulation"
@@ -57,7 +57,7 @@ then
   echo "Opening tgz archive..."
   tmp=$(mktemp -d)
   chmod a+rx "$tmp"
-  cd "$tmp"
+  cd "$tmp" || terminate "directory error"
   tar xfz "$SRC" 
   SRC=$(ls -1d "$tmp"/*)
   IS_TMP=1
@@ -83,18 +83,18 @@ su -c "$SCODOC_DIR/config/psql_restore_databases.sh $PG_DUMPFILE" postgres
 # 
 echo Copying data files...
 
-rm -rf "$INSTANCE_DIR/var"
+rm -rf "${INSTANCE_DIR:?}/var"
 $COPY "$SRC/var" "$INSTANCE_DIR"
 
-if [ ! -e "${SCODOC_VAR_DIR}/config/" ]
+if [ ! -e "${SCODOC_VAR_DIR:?}/config/" ]
 then
-  mkdir "${SCODOC_VAR_DIR}/config/"
-  chown www-data.www-data "${SCODOC_VAR_DIR}/config/"
-  chmod 775 "${SCODOC_VAR_DIR}/config/"
+  mkdir "${SCODOC_VAR_DIR:?}/config/"
+  chown www-data.www-data "${SCODOC_VAR_DIR:?}/config/"
+  chmod 775 "${SCODOC_VAR_DIR:?}/config/"
 fi
 
-rm -rf "$SCODOC_DIR/config/depts" 
-if [ -e "$SRC/depts" ]
+rm -rf "${SCODOC_DIR:?}/config/depts" 
+if [ -e "${SRC:?}/depts" ]
 then
   # legacy depts => move them to var
   $COPY "$SRC/depts" "${SCODOC_VAR_DIR}/config/"
@@ -107,7 +107,7 @@ then
   $COPY "$SRC/photos" "${SCODOC_VAR_DIR}/"
 fi 
 
-rm -rf "$SCODOC_DIR/logos"
+rm -rf "${SCODOC_DIR:?}/logos"
 $COPY "$SRC/logos" "$SCODOC_DIR/"
 
 mv "$SCODOC_DIR/config/scodoc_config.py"  "$SCODOC_DIR/config/scodoc_config.py.$(date +%Y%m%d-%H%M%S)" 
@@ -119,7 +119,7 @@ then
    iconv -f iso8859-15 -t utf-8 "$SCODOC_DIR/config/scodoc_config.py.orig" > "$SCODOC_DIR/config/scodoc_config.py"
 fi
 
-rm -rf "$INSTANCE_DIR/log"
+rm -rf "${INSTANCE_DIR:?}/log"
 $COPY "$SRC/log" "$INSTANCE_DIR/"
 
 # Fix file ownership and access rights
@@ -130,13 +130,13 @@ chown -R  www-data.root "$SCODOC_DIR"
 chmod -R 775 "$SCODOC_DIR"
 
 # Remove tmp directory
-if [ $IS_TMP = "1" ]
+if [ "$IS_TMP" = "1" ]
 then
-  rm -rf $tmp
+  rm -rf "${tmp}"
 fi
 
 # Mise a jour BD ScoDoc
-cd $SCODOC_DIR/config
+cd ${SCODOC_DIR:?}/config || terminate "no config directory"
 ./upgrade.sh
 
 #
diff --git a/config/save_scodoc_data.sh b/config/save_scodoc_data.sh
index a53c76403..389ed16c3 100755
--- a/config/save_scodoc_data.sh
+++ b/config/save_scodoc_data.sh
@@ -35,7 +35,7 @@ INSTANCE_DIR=/opt/scodoc
 SCODOC_DIR="$INSTANCE_DIR/Products/ScoDoc"
 
 source utils.sh
-check_uid_root $0
+check_uid_root "$0"
 
 echo "Stopping ScoDoc..."
 scodocctl stop
@@ -44,9 +44,9 @@ scodocctl stop
 echo "Dumping SQL database..."
 chown postgres "$DEST"
 su -c "pg_dumpall > \"$DEST\"/scodoc.dump.txt" postgres
-if [ ! $? -eq 0 ] 
+if [ ! "$?" -eq 0 ] 
 then
-  echo "Error dumping postgresql database\nPlease check that SQL server is running\nAborting."
+  printf "Error dumping postgresql database\nPlease check that SQL server is running\nAborting."
   exit 1
 fi
 chown root "$DEST"
@@ -57,7 +57,7 @@ cp -rp "$INSTANCE_DIR/var" "$DEST"
 
 # Depts db config (now in .../var)
 shopt -s nullglob
-if [ ! -z "$(echo ${SCODOC_DIR}/config/depts/*.cfg)" ]
+if [ -n "$(echo ${SCODOC_DIR}/config/depts/*.cfg)" ]
 then
   echo "Copying legacy depts configs..."
   cp -rp "$SCODOC_DIR/config/depts" "$DEST"
@@ -86,6 +86,6 @@ cp -rp "$INSTANCE_DIR/log" "$DEST"
 echo
 echo "Archiving backup files in a $DEST.tgz..."
 base=$(basename "$DEST")
-(cd "$DEST"/..; tar cfz "$DEST".tgz "$base")
+(cd "$DEST"/.. || terminate "directory error"; tar cfz "$DEST".tgz "$base")
 
 echo "Done (you can copy " "$DEST"".tgz to destination machine)."