Of course, you also have the full power of the Linux or UNIX commands such as sed or awk for more complex jobs, but you should also know how to use shell expansions.
当然，您仍然拥有Linux或UNIX命令(如sed或awk)的全部功能来执行更复杂的工作，但是您也应该了解如何使用shell扩展。
Every Linux distribution has GNU sed, or at least should.
每一个Linux发行版都有(或至少应该有)GNUsed。
Fortunately for us Linux users, one of the nicest versions of sed out there happens to be GNU sed, which is currently at version 3.02.
对Linux用户来说幸运的是，最好的sed版本之一恰好是GNU sed，其当前版本是3.02。
Fortunately for us Linux users, one of the nicest versions of sed out there happens to be GNU sed, which is currently at version 3.02.
对Linux用户来说幸运的是，最好的sed版本之一恰好是GNU sed，其当前版本是3.02。
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