DOS

Распаковать ARJ-файл без запросов на подтверждение.

$ yes y | arj x PACK3.ARJ
....
Extracting NR2PWALL.EXE, Warning! Binary file from a different OS  OK        
Extracting WTOMB2CD.EXE, Warning! Binary file from a different OS  OK        
Extracting NR2PWALL.TXT, Warning! Binary file from a different OS  OK        
PACK3/NUDERAID.PRG/README.!!!, Create this directory? 
....