C:\test>copy con junk.txt
foo  r1.1   abc
foo  r10.1  pqr
qux  r2.1   lmn
bar  r33.1  xpq
^Z
        1 file(s) copied.

C:\test>perl -anle"print join chr(9), @F[ 1,0,2 ]" junk.txt
r1.1    foo     abc
r10.1   foo     pqr
r2.1    qux     lmn
r33.1   bar     xpq