Hola , tengo un archivo de texto con 5 campos los cuales tiene en el segundo campo duplicado varios movientos con diferentes fechas y horas.

id num fecha hora valor3

1 2222 10/12/09 10:01 1000
2 2222 11/12/09 11:04 3000
3 4556 09/12/08 12:22 1900
4 4556 12/12/09 11:00 2900
5 1111 17/03/10 10:00 1100

Hello.

Per our forum rules, all posts must be in English.

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Try:

awk '{ A[$2]=$0; }END { for (e in A) print A[e] }' file

ok dennis , thank you . i try for next question , write in english .

regard