diff --git a/linux/ubuntu.txt b/linux/ubuntu.txt
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+1.gnome桌面两个好用的插件：
+(1)Frippery Move Clock By rmyorston
+https://extensions.gnome.org/extension/2/move-clock/
+(2)system-monitor By Cerin
+https://extensions.gnome.org/extension/120/system-monitor/
+