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An accumulation of ksh

ksh的内置命令history可以显示出命令历史列表。

当给一个局部变量赋值时，等号两边不能出现空格。（今天刚犯了这个错误-_-b）

设置一个变量为空时，等号右边什么都不带即可。

双美元符号$$是一个特殊变量，它保存了当前shell的PID。

env命令列出所有环境变量（输出变量）。

To be continued

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This entry was written by jarodwang and posted on July 3, 2008 at 23:34 and filed under Programming. Bookmark the permalink. Follow any comments here with the RSS feed for this post. Post a comment(Latest is displayed first) or leave a trackback: Trackback URL.

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