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Church Of The
Swimming Elephant

Usage | Options | Commands | Expressions | Addresses

SED Addresses

An address is either empty, a decimal number that counts input lines cumulatively across files, a $ that addresses the last line of input, or a context address, which consists of a /regular expression/ as described on the regexp(5) manual page.

A command line with no addresses selects every pattern space.

A command line with one address selects each pattern space that matches the address.

A command line with two addresses selects the inclusive range from the first pattern space that matches the first address through the next pattern space that matches the second address. Thereafter the process is repeated, looking again for the first address. (If the second address is a number less than or equal to the line number selected by the first address, only the line corresponding to the first address is selected.) Typically, address are separated from each other by a comma (,). They may also be separated by a semicolon (;).


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