/usr/bin/cp 01.txt 01.o.txt
/usr/bin/cp 02.txt 02.o.txt
/usr/bin/cp 03.txt 03.o.txt
/usr/bin/cp 04.txt 04.o.txt
/usr/bin/cp 05.txt 05.o.txt
/usr/bin/cp 06.txt 06.o.txt
