substitute

[address] s [/pattern/replacement/] [options] [count]

Replace each instance of pattern on the specified lines with replacement. If pattern and replacement are omitted, repeat last substitution. count specifies the number of lines on which to substitute, starting with address. See additional examples in Section 6.

Options

c

Prompt for confirmation before each change.

g

Substitute all instances of pattern on each line.

p

Print the last line on which a substitution was made.

Examples

:1,10s/yes/no/g	Substitute on first 10 lines
:%s/[Hh]ello/Hi/gc	Confirm global substitutions
:s/Fortran/\U&/ 3	Uppercase "Fortran" on next three lines