basic script for yes and no answers Post: 302193098

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Top Forums Shell Programming and Scripting basic script for yes and no answers Post 302193098 by denn on Thursday 8th of May 2008 01:25:30 PM

05-08-2008

Registered User

you was originally going to accept
y|Y|yes) for user input, so users being users, you've really no
idea what they'll type, just for kicks or to give you a hard time.
all the possible options they could use:
yes
YES
YEs
yES
yeS
YeS
yEs

When i give users a choice, I want either a definate positive or a negative,
anthing else is considered invalid and they'll be reasked until they give a proper response.

This is my suggestion:

Code:

#!/usr/bin/ksh

until [[ $answer = "Y" ]] || [[ $answer = "N" ]]
do
        echo "Do you want to start the process 1-5 Y/N?"
        read answer
        answer=`echo $answer | tr [:lower:] [:upper:]`
        case $answer in
           Y|YES)
                answer=`echo $answer | cut -c1`
                # /usr/home/myhome/script.ksh
                print "Process 1-5 Started. Done."
                ;;
           N|NO)
                answer=`echo $answer | cut -c1`
                print "Process 1-5 Not Started. Exiting Now"
                ;;
                
           *)
                print Unexpected Input: $answer  Retrying
                ;;
        esac

done

Note: I commented out your
/usr/home/myhome/script.ksh
to test.

Last edited by denn; 05-08-2008 at 03:51 PM..

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service

service(8)						      System Manager's Manual							service(8)

NAME

       service - run a System V init script

SYNOPSIS

       service SCRIPT COMMAND [OPTIONS]

       service --status-all

       service --help | -h | --version

DESCRIPTION

       service	runs a System V init script in as predictable an environment as possible, removing most environment variables and with the current
       working directory set to /.

       The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT.  The  supported  values  of  COMMAND  depend  on  the
       invoked	script.  service passes COMMAND and OPTIONS to the init script unmodified.  All scripts should support at least the start and stop
       commands.  As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start  com-
       mand.

       service --status-all runs all init scripts, in alphabetical order, with the status command.

EXIT CODES

       service calls the init script and returns the status returned by it.

FILES

       /etc/init.d
	      The directory containing System V init scripts.

ENVIRONMENT

       LANG, TERM
	      The only environment variables passed to the init scripts.

SEE ALSO

       /etc/init.d/skeleton,
       update-rc.d(8),
       init(8),
       invoke-rc.d(8).

								     Jan 2006								service(8)