[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.
Prompt for confirmation before each change.
Substitute all instances of
pattern
on each line.
Print the last line on which a substitution was made.
: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