Update cheatsheets

linux/xfce4-terminal

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# xfce4-terminal
+
+> The XFCE4 terminal emulator.
+> More information: <https://docs.xfce.org/apps/xfce4-terminal/start>.
+
+- 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 "{{command1}}" --tab --command "{{command2}}"`