En linux existe una cosa llamada
manual, que se invoca con el comando: "man".
Si hubieras hecho "man sort" y hubieras leido el manual (
RTFM), hubieras encontrado esto:
-t 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-whitespace character and a whitespace
character. That is to say, given the input line ` foo bar',
sort breaks it into fields ` foo' and ` bar'. The field separa-
tor is not considered to be part of either the field preceding
or the field following it.
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