Libreoffice MS Theme: check if libreoffice installed

apps/Libreoffice MS theme/install

@@ -7,6 +7,10 @@ function error {
   exit 1
 }
 
+if ! command -v libreoffice >/dev/null ;then
+  error "Libreoffice is not installed, so this theme is useless to you.\nTo install libreoffice, run this in a terminal:\nsudo apt install libreoffice libreoffice-gtk2"
+fi
+
 rm -rf ~/libreoffice-ms-theme
 git clone --depth=1 https://github.com/Botspot/libreoffice-ms-theme || error "Failed to git clone libreoffice-ms-theme repository!"
 ~/libreoffice-ms-theme/apply.sh || error "apply.sh failed"

apps/Libreoffice MS theme/uninstall

@@ -9,7 +9,7 @@ function error {
 
 rm -rf ~/libreoffice-ms-theme
 git clone --depth=1 https://github.com/Botspot/libreoffice-ms-theme || error "Failed to git clone libreoffice-ms-theme repository!"
-~/libreoffice-ms-theme/revert.sh || error "apply.sh failed"
+~/libreoffice-ms-theme/revert.sh || error "revert.sh failed"
 rm -rf ~/libreoffice-ms-theme
 
 echo "Your original settings are now restored. Libreoffice should now behave how it was originally."