ocr: Figure 3 Using dup()toconnect: to a device After close of STDIN (FD 0) and STDOUT (FD1) and DUPO After exec of As program etarts to modem device shell script YOUCTIY Vouray Your TTY STDERR SIDOUL STDIN STDERR STDERR Dialer program Dialer program Your shell script SIOUR STDIN STDOUT STDIN INPUT OUTPUT! INPUT OUTPUT Moden device Modem device
