33.3 Line AddressingThe key to making line editors work for you is understanding how to select (or "address") the lines that will be affected by the commands in your script. In ed and ex , a command affects only the "current" line - the first line of the file to begin with, and later the site of the last edit or movement command - unless you precede the command with an address to indicate some other line or lines. In sed , most commands apply to every line unless you give an address. Most line editors address lines in three ways:
It's possible to address single lines or a range of lines. describes the addresses you can use with ex .
If the address specifies a range of lines, the format is:
where x and y are the first and last addressed lines. x must precede y in the file. - , |
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