added network functions to new net.sh lib, moved set_system_proxy, begin of offline mode implementation

lib/utils.sh

@@ -8,7 +8,6 @@
 # https://opensource.org/licenses/BSD-3-Clause
 # ------------------------------------------------------------------------------
 
-
 # ------------------------------------------------------------------------------
 # Define normalised time display, filename friendly
 stdtime()
@@ -49,15 +48,13 @@ export -f get_mod_name
 
 
 # ------------------------------------------------------------------------------
-# Set system proxy vars
-set_system_proxy()
+# Remove leading and trailing space of the given parameter
+trim()
 {
-    # Declare proxy system vars if needed and if not already declared
-    if [[ -n $PROXY_SRV && -n $PROXY_SRV_PORT && -z $NO_PROXY ]]; then
-        export http_proxy=${http_proxy:-"http://$PROXY_SRV:$PROXY_SRV_PORT/"}
-        export https_proxy=${https_proxy:-"http://$PROXY_SRV:$PROXY_SRV_PORT/"}
-    fi
+    local string="$@"
+    echo "$(sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//'<<<"${string}")"
+    unset string
 }
-export -f set_system_proxy
+export -f trim
 
 # EOF