Add a new function to test network connection.

Display "bonjour" function in zlogin only if a network connection is available

zlogin

@@ -14,8 +14,11 @@
 #echo "\n#### uptime ####"
 #uptime
 
+# If a network connection is available (check function def in zshrc)
+if ( is_network ); then
   # Affiche un dessin (cf fonction définie dans zshrc)
   bonjour
+fi
 
 # Afficher la liste todo (paquet devtodo)
 printf '%b' "${MAGENTA}++++++++++++++++++++++ ${WHITEB}Liste de tâches${RESET} ${MAGENTA}:++++++++++++++++++++++${RESET}\n"

zshrc

@@ -351,6 +351,19 @@ function ippriv()
   done
 }
 
+# Test if a network connection is available
+function is_network()
+{
+  for path_interface in $(find /sys/class/net/ ! -name lo -type l);
+  do
+    IS_UP=$(grep 1 ${path_interface}/carrier)
+    if [ ${IS_UP} ]; then
+      return 0
+    fi
+  done
+  printf '%b' "${REDB}Not Online${RESET}\n"
+  return 1
+}
 
 #Renomme les fichiers en minuscule
 function lowercase()