Published at LXer:
Welcome to the second part of our series, a part that will focus on sed, the GNU version. As you will see, there are several variants of sed, which is available for quite a few platforms, but we will focus on GNU sed versions 4.x. Many of you have already heard about sed and already used it, mainly as a substitution tool. But that is just a segment of what sed can do, and we will do our best to show you as much as possible of what you can do with it. The name stands for Stream EDitor, and here "stream" can be a file, a pipe or simply stdin.
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