ainda não...
$ grep Received * | xargs tail -n 1
tail: cannot open `rec1.txt:Received' for reading: No such file or directory
tail: cannot open `1' for reading: No such file or directory
tail: cannot open `rec1.txt:Received' for reading: No such file or directory
tail: cannot open `2' for reading: No such file or directory
tail: cannot open `rec1.txt:Received' for reading: No such file or directory
tail: cannot open `3' for reading: No such file or directory
tail: cannot open `rec1.txt:Received' for reading: No such file or directory
tail: cannot open `4' for reading: No such file or directory
tail: cannot open `rec1.txt:Received' for reading: No such file or directory
tail: cannot open `último' for reading: No such file or directory
tail: cannot open
`rec2.txt:Received' for reading: No such file or directory
tail: cannot open `último' for reading: No such file or directory
tail: cannot open `rec3.txt:Received' for reading: No such file or directory
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