sed (Stream EDitor) is a programming language used to apply textual transformations to a sequential stream of data. It reads input files line by line, applying the operation which has been specified via the command line (or a sed script), and then outputs the line. It was developed from 1973 to 1974 as a Unix utility by Lee E. McMahon of Bell Labs, and is available today on most operating systems. [edit]
sed (Stream EDitor) is a programming language used to apply textual transformations to a s...
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If you find yourself using perl -e quite often just to run some text through a perl regular expression, you may want to consider using sed. It's found on many unix systems, and its regular expression syntax is almost identical to perl's. If you find yourself on a system lacking perl, but are in need of perl's excellent regex power, give sed a try.