read的問題

sam.zhao

function cdrom_test {

print | tee -a ${LOG_FILE}
print "Checking for CDROM is connected with media ..." | tee -a ${LOG_FILE}
print | tee -a ${LOG_FILE}

dd if=/devices/pci@1f,0/pci@1,1/ide@3/sd@1,0:a of=/dev/null count=128 > /dev/null 2>&1

if (( $? == 0 )); then

        print "\t\t>>>> CDROM check PASSED. <<<<" | tee -a ${LOG_FILE}
        print | tee -a ${LOG_FILE}

else
               print | tee -a ${LOG_FILE}
        print "Device might be busy or not ready.  Will give it another try."
        print "Hit <RETURN> when you ready ..." | tee -a ${LOG_FILE}
        read

        dd if=/devices/pci@1f,0/pci@1,1/ide@3/sd@1,0:a of=/dev/null count=128 > /dev/null 2>&1
       
        if (( $? == 0 )); then

                print "\t\t>>>> CDROM check PASSED. <<<<" | tee -a ${LOG_FILE}
                print | tee -a ${LOG_FILE}

        else

                print "\t\t>>>> CDROM check FAILED. <<<<" | tee -a ${LOG_FILE} >> ${FAIL}
                print >> ${FAIL}
                system_halt
        fi

fi

}
各位老大，請教一個問題：上面程序中else下面的第四行有個read,做什麼用的？

sam.zhao

偶已經知道了
謝謝