20.3. Line Addressing
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.
Table 20-1 describes the addresses you can use with ex.
Table 20-1. Line addressing in the ex editor
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.
--TOR, DG, and JP
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