sed
is an editor which expects to read a stream of text, apply some action to the text and send it to another stream. It filters and transforms the text along the way according to instructions provided to it. These instructions are referred to as a sed
script.
The name "sed" comes from Stream Editor, and sed
was developed from 1973 to 1974 as a Unix utility by Lee E. McMahon of Bell Labs. GNU sed
added several new features including better documentation, though most of it is only available on the command line through the info
command. The full manual is of course available on the web.
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sed
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