If I have a text file that has the following statement: Modes  1 I can use sed to change 1 to 2 sed "s/Modes 1/Modes 2" < /tmp/in > /tmp/out What if I do not know if there is a 1 or a 2 or a 3. How can I use sed to chenge the "Mode X" to Mode 1"? Thanks, Chris