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Full Discussion: getopts question
Top Forums Shell Programming and Scripting getopts question Post 302273782 by cfajohnson on Monday 5th of January 2009 10:52:44 PM
Old 01-05-2009
Quote:
Originally Posted by rookieuxixsa
I am trying to set up prompts when you don't enter the right information or dont enter the information at all, when executing a script. Below is the question that i am asking and i am not sure how to set up the if statements to make sure that the user enters the name, cpu's, memory and ip. I was told that getopts with a cease statement might be usefull, but im not sure how to apply it. Any help would be greatly appreciated...
Please put code inside [code] tags.
Quote:
Code:
NAME=$1
NCPUS=$2
MEMORY=$3
IP=$4
MACHINENAME=`hostname`
MASTERHOST=svvnyc702
 
echo "Do you wish to proceed with the creation of UAT ZONE zone-${NAME}, CPU's ${NCPUS}, MEMORY ${MEMORY}, IP ${IP}
<y or n> ? \c"

Code:
while [ -z "$name" ] ## I recommend using lowercase variable names
do
  printf "Enter NAME: "
  read name
done

while [ -z "$ncpus" ]
do
  printf "Enter number of CPUs: "
  read ncpus
done

while [ -z "$memory" ]
do
  printf "Enter memory: "
  read memory
done

Quote:
Code:
read WISH
echo
if [ $WISH = "n" ] ; then
  echo "You chose no, good bye"
  exit
fi
if [ ! $WISH = "y" ] ; then
  echo in vaild optin g - exiting
  exit
fi


Code:
read wish
case $wish in
   n) echo "You chose no, good bye"
      exit ;;
esac

 

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LEARN ABOUT DEBIAN

printok

MESSAGES(3)						  libbash messages Library Manual					       MESSAGES(3)

NAME

     messages -- libbash library that implements a set of functions to print standard status messages

SYNOPSIS

     printOK	 [indent]
     printFAIL	 [indent]
     printNA	 [indent]
     printATTN	 [indent]
     printWAIT	 [indent]

DESCRIPTION

   General
     messages is a collection of functions to print standard status messages - those [ OK ] and [FAIL] messages you see during Linux boot process.

     The function list:
	   printOK	    Prints a standard [ OK ] message (green)
	   printFAIL	    Prints a standard [FAIL] message (red)
	   printNA	    Prints a standard [ N/A] message (yellow)
	   printATTN	    Prints a standard [ATTN] message (yellow)
	   printWAIT	    Prints a standard [WAIT] message (yellow)

     Detailed interface description follows.

   indent
     Column to move to before printing.

     Default indent is calculated as TTY_WIDTH-10. If current tty width can not be determined (for example, in case of serial console), it
     defaults to 80, so default indent is 80-10=10

FUNCTIONS DESCRIPTIONS

   printOK [indent]
     Prints a standard [ OK ] message (green)

   printFAIL [indent]
     Prints a standard [FAIL] message (red)

   printNA [indent]
     Prints a standard [ N/A] message (yellow)

   printATTN [indent]
     Prints a standard [ATTN] message (yellow)

   printWAIT [indent]
     Prints a standard [WAIT] message (yellow)

EXAMPLES

     Run a program named MyProg, and report it's success or failure:

	      echo -n 'Running MyProg...'
	      printWAIT
	      if MyProg ; then
		      printOK
	      else
		      printFAIL
	      fi

AUTHORS

     Hai Zaar <haizaar@haizaar.com>
     Gil Ran <gil@ran4.net>

SEE ALSO

     ldbash(1), libbash(1)

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