删除文件以＃开头的所有行 [英] Delete all lines beginning with a # from a file

问题描述

所有在文件注释行与＃开始。如何删除所有与＃开头的行（只有那些线）？包含其他行＃，但不是在该行的开头应被忽略。

All of the lines with comments in a file begin with #. How can I delete all of the lines (and only those lines) which begin with #? Other lines containing #, but not at the beginning of the line should be ignored.

推荐答案

这可以被用做单行：

sed '/^#/ d'

本说，发现以＃开头，并删除它们的所有行，离开一切。

This says, "find all lines that start with # and delete them, leaving everything else."

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