Menu in Menu script issue Post: 302475286

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Top Forums Shell Programming and Scripting Menu in Menu script issue Post 302475286 by ctsgnb on Saturday 27th of November 2010 06:35:22 PM

11-27-2010

Registered User

You can lop in ==Calculator Program==

just the same way you loop in ==Option menu==

You can use break to get out of a while loop without exiting the entire script.

Use function when you do some tasks many times.

By the way, here is a sample of your code with some little improvment

Code:

case $option in

1)
compute(){
        echo $1
        echo "Enter first number" ; read a
        echo "Enter second number"; read b
        op=`expr $a "$SIGN" $b`
        [[ $op -ge 0 ]] && COLOR=$BLUE || COLOR=$RED
        echo -e Answer is: $COLOR"$op"$BLACK
}

while :
do
        echo ==Calculator Program==
        echo "1 - Addition"
        echo "2 - Subtraction"
        echo "3 - Multiplication"
        echo "4 - Division"
        echo "5 - Back to previous Menu"
        echo "6 - Exit"
        echo "Please enter your option"
        read option

        MSG="" ; SIGN=''
        case $option in
                1) MSG="==Addition==" ; SIGN='+' ; compute "$MSG" ;;
                2) MSG="==Subtraction==" ; SIGN='-' ; compute "$MSG" ;;
                3) MSG="==Multiplication==" ; SIGN='*' ; compute "$MSG" ;;
                4) MSG="==Division==" ; SIGN='/' ; compute "$MSG" ;;
                5) clear ; break ;;
                6) echo "Ok bye" ; exit 0 ;;
                *) echo "Enter valid option" ;;
        esac
done
;;

If we want to exit, there already is a choice in the menu, so .... the following lines are useless (and even bad for the workflow of query)

Code:

echo "Do you want to contine (Y/N)"
read opt;
echo $opt | grep -i 'y'
if [[ $? -eq 0 ]]
then
 clear
else
 exit 0
fi

Last edited by ctsgnb; 11-27-2010 at 09:02 PM..

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sysman

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

NAME

       sysman - Front end command used to invoke several SysMan services

SYNOPSIS

       /usr/sbin/sysman -menu

       /usr/sbin/sysman -station

       /usr/sbin/sysman -cli

       /usr/sbin/sysman -clone

       /usr/sbin/sysman -help

OPTIONS

       Launches  the SysMan Menu (sysman_menu(8)).  Launches the SysMan Station (sysman_station(8)).  Command line interface for manipulating sys-
       tem management data (sysman_cli(8)).  Saves and replicates SysMan configuration information  for  installation  cloning	(sysman_clone(8)).
       Cloning is not supported in a cluster environment.  Displays help on the sysman command.

DESCRIPTION

       The  sysman  command provides a common interface for invoking several SysMan services: A menu driven, task oriented system management tool.
       SysMan Menu and its associated tasks can run on a character cell terminal, an X Windows display, from a PC,  or	from  a  Web  browser.	 A
       graphical  interface  for  monitoring and managing a single or cluster system.  The SysMan Menu and its specific tasks can be launched from
       the SysMan Station.  Provides a generic command line interface to the System Management (SysMan) data.  Saves certain SysMan  configuration
       information from a previously configured system and replicate that configuration information across one or more clients.

       For  more  information  on a specific command, please refer to the specific reference page. For the SysMan Menu and the SysMan Station, you
       also can refer to the online help.

SEE ALSO

       Commands: sysman_menu(8), sysman_station(8), sysman_cli(8), sysman_clone(8)

       System Administration

																	 sysman(8)