How to write bourne shell script that will prompt the user for a number and which can be ended only by the user typing STOP. The script should ignore the interrupts from Control +C and Control +\ and should display a message specifying the interrupt.

Your homework assignment should contain a while loop and "trap". Please post specific questions regarding the portions of this task you are having trouble with.

i have the same problem too ...below is the one that i have wrote..however, i dont know how to use the trap and dont have any idea how to ignore the interupts #!/bin/sh #PAGE 40 number=1 #set IGNOREEOF=10 while [ $number!="STOP" ]||[ $number!=NULL ] #||[ IGNOREEOF=9 ] do #set IGNOREEOF:ctrl+c:ctrl+ echo "Enter a number:" read number echo "The number you have entered is $number" done ....please help..by the way,....what is IGNOREEOF ....i found it in the book but i dont know how to use

#!/usr/bin/ksh # http://linux.oreillynet.com/lpt/a/66 # Signal Number Signal Name Explanation # 0 EXIT exit command # 1 HUP When session disconnected # 2 INT Interrupt -- often CTRL-c # 3 QUIT Quit -- often CTRL-\ # 15 TERM From kill command echo "Please type STOP to exit" # typeset -i answer=0 while [ "$answer" != "STOP" ] ; do trap 'echo "`basename $0`: Interrupt attempted." 1>&2' 2 3 echo "Please input a number: " ; read answer echo $answer done

where did your "bourne" shell come from? AFIK, mandy has bash. try man bash or man sh (if relly bourne) search for "trap"

Thank you very much for the help. However I discovered there is sligthly difference in using "trap" between bourne shell and korn shell. I didn't used 1>&2 but I added an echo statement instead. It works the same way as the what is written in the Korn shell otherwise it is not really the same.