Linux in a Nutshell, Fourth Edition

Name

global

Synopsis

[address] g[!]/
                  pattern
                  /[commands]

Execute commands on all lines that contain pattern or, if address is specified, on all lines within that range. If commands are not specified, print all such lines. If ! is used, execute commands on all lines that don’t contain pattern. See v.

Examples

                  g/Unix/p               
                  Print all lines containing "Unix"
:g/Name:/s/tom/Tom/     
                  Change "tom" to "Tom" on all lines 
                        containing "Name:"