xfce4-terminal: add page (#2548)

pages/linux/xfce4-terminal.md

@@ -0,0 +1,27 @@
+# xfce4-terminal
+
+> The XFCE4 terminal emulator.
+
+- Open a new terminal window:
+
+`xfce4-terminal`
+
+- Set the initial title:
+
+`xfce4-terminal --initial-title "{{initial_title}}"`
+
+- Open a new tab in the current terminal window:
+
+`xfce4-terminal --tab`
+
+- Execute a command in a new terminal window:
+
+`xfce4-terminal --command "{{command_with_args}}"`
+
+- Keep the terminal around after the executed command finishes executing:
+
+`xfce4-terminal --command "{{command_with_args}}" --hold`
+
+- Open multiple new tabs, executing a command in each:
+
+`xfce4-terminal --tab --command "{{command_a}}" --tab --command "{{command_b}}"`