查看Linux安裝了那些軟件：
horatio@horatio-OptiPlex-3010:~$ dpkg -l |grep -i "google*"
rc account-plugin-google 0.11+14.04.20140409.1-0ubuntu1 all GNOME Control Center account plugin for single signon
ii google-chrome-stable 55.0.2883.87-1 amd64 The web browser from Google
ii google-earth-stable 7.1.7.2606-r0 amd64 Explore, search and discover the planet
rc libgooglepinyin0:amd64 0.1.2-1 amd64 Pinyin engine fork from Google Pinyin on Android把安裝的軟件列表保存爲文本：
sudo dpkg -l > *.txt