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Full Discussion: change
Homework and Emergencies Homework & Coursework Questions change Post 302357331 by ripat on Tuesday 29th of September 2009 11:09:38 AM
Old 09-29-2009
There are two things, the number of tries and the running clock. The -t option of the read internal command takes care of the timout while the shell wait for the user input.

But you have to implement a general timer that will start as soon as the script starts. For that, use the date function converted in number of seconds since EPOCH. That's the idea. Try this:

Code:
#!/bin/bash
time=60
tries=3
start=$(date +%s)

left=$time
while true;do
    read -t $left -p "Code: " code
    ((tries--))
    left=$(($time-$(date +%s)+start))
    if (( $left<=0 || $tries==0 ));then
        echo "BOOOOM"
        break
    fi
    if [[ "$code" == "boom" ]];then
        echo "Correct. Bomb defused"
        break
    else
        echo "Wrong. Try again. There are $left seconds and $tries tries left."
    fi
done
exit

And.. please use the CODE tags for clarity.
Last edited by ripat; 09-29-2009 at 01:14 PM.. Reason: some fixing
 

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LEARN ABOUT DEBIAN

nwfstime

NWFSTIME(1)							     nwfstime							       NWFSTIME(1)

NAME

       nwfstime - Display / Set a NetWare server's date and time

SYNOPSIS

       nwfstime [ -h ] [ -S server ] [ -U user name ] [ -P password | -n ] [ -C ] [ -s ]

DESCRIPTION

       nwfstime displays a NetWare server's date and time. You can also set a NetWare server's date and time from the local time.

OPTIONS

       -h
	  With -h nwfstime prints a little help text.

       -S server
	  is the name of the server you want to use.

       -U user
	  user is the user name to use for login. To set the server's time, you need supervisor privileges.

       -P password
	  password  is	the password to use for login. If neither -n nor -P are given, and the user has no open connection to the server, nwfstime
	  prompts for a password.

       -n
	  -n should be given if no password is required for the login. As you need supervisor privileges for  setting  the  date  and  time,  this
	  option is probably not used very often.

       -C
	  By default, passwords are converted to uppercase before they are sent to the server, because most servers require this. You can turn off
	  this conversion by -C.

       -s
	  With -s, nwfstime sets the file server's date and time according to the local date and time.

nwfstime							    12/10/1996							       NWFSTIME(1)
All times are GMT -4. The time now is 01:14 AM.
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