Firefox和ThunderBird自动优化内存使用
下面的方法对Firefox和ThunderBird都有效：
在Firefox地址栏输入about:config或ThunderBird的工具-》高级-》配置编辑器中, 增加布尔变量config.trim_on_minimize为true。
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Archive for 10th February 2010
Print directory tree on Windows and Linux using tree, sed, awk or Python
Windows: there is ‘tree.com‘ command showing the directory structure.
http://chxkyy.javaeye.com/blog/213864
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