`-t SEPARATOR'
`--field-separator=SEPARATOR'
Use character SEPARATOR as the field separator when finding the
sort keys in each line. By default, fields are separated by the
empty string between a non-blank character and a blank character.
That is, given the input line ` foo bar', `sort' breaks it into
fields ` foo' and ` bar'. The field separator is not considered
to be part of either the field preceding or the field following,
so with `sort -t " "' the same input line has three fields: an
empty field, `foo', and `bar'. However, fields that extend to the
end of the line, as `-k 2', or fields consisting of a range, as
`-k 2,3', retain the field separators present between the
endpoints of the range.
If no key fields are specified, `sort' uses a default key of
the entire line
