delete whitespace at the end of number format

Question

Hi.. I have several line contains number like:

XXXXXX.XXX (this number ended by whitespace.)

How can I delete whitespace at the end of number format using sed? Thank for the help.

Answer 1

sed 's/\s\+$//'

Answer 2

sed -e 's/\s*$//' in > out

removes any trailing spaces

sed -re 's/^([0-9\.]+)\s*$/\1/' in > out

removes trailing spaces only on line beginning with a combination of digits and dot

Answer 3

sed 's/[ \t]*$//' file