Linux in a Nutshell, Fourth Edition

Name

substitute

Synopsis

[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. When preceded by the global (g) or v command, this command can be specified with a blank pattern, in which case the pattern from the g or v command is used. For more examples, see Chapter 9.

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 first instance of 
                                  "Fortran" on next three lines
:g/^[0-9][0-9]*/s//Line &:/  
                  For every line beginning with one or
                              more digits, add the "Line" and a colon