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Full Discussion: Trouble in getting user input while using CASE statement in UNIX
Top Forums Shell Programming and Scripting Trouble in getting user input while using CASE statement in UNIX Post 302595150 by methyl on Thursday 2nd of February 2012 08:31:52 AM
Old 02-02-2012
Quote:
exit 0;;
#iam getting error at the place exit 0;;
The ;; are in the wrong place, they should be after the fi which terminates your if statement. In a case statement the ;; terminates each separate condition.



Quote:
*) echo "please enter correct value" read ;;
break;;
The last two lines are a bit iffy. Probably best to just output an error message because the script is going to ask the question again on the next iteration of the "while true" loop (if you move the question to within the loop). Also, lose the break;; line because it is totally out of context.
Add the "esac" to complement the original "case".
Add the "done" to complement the original "do".
Code:
*) echo "please enter correct value" ;;
esac
done

The initial question to populate $answer should probably be inside the do-done loop or the users will neve get the chance to change the value.
Last edited by methyl; 02-02-2012 at 09:41 AM..
 

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LEARN ABOUT LINUX

execute

EXECUTE(7)                                                         SQL Commands                                                         EXECUTE(7)

NAME

       EXECUTE - execute a prepared statement

SYNOPSIS

       EXECUTE name [ ( parameter [, ...] ) ]

DESCRIPTION

       EXECUTE  is  used  to execute a previously prepared statement. Since prepared statements only exist for the duration of a session, the pre-
       pared statement must have been created by a PREPARE statement executed earlier in the current session.

       If the PREPARE statement that created the statement specified some parameters, a compatible set of parameters must be passed to the EXECUTE
       statement,  or  else an error is raised. Note that (unlike functions) prepared statements are not overloaded based on the type or number of
       their parameters; the name of a prepared statement must be unique within a database session.

       For more information on the creation and usage of prepared statements, see PREPARE [prepare(7)].

PARAMETERS

       name   The name of the prepared statement to execute.

       parameter
              The actual value of a parameter to the prepared statement. This must be an expression yielding a value that is compatible  with  the
              data type of this parameter, as was determined when the prepared statement was created.

OUTPUTS

       The command tag returned by EXECUTE is that of the prepared statement, and not EXECUTE.

EXAMPLES

       Examples are given in the Examples [prepare(7)] section of the PREPARE [prepare(7)] documentation.

COMPATIBILITY

       The  SQL  standard includes an EXECUTE statement, but it is only for use in embedded SQL. This version of the EXECUTE statement also uses a
       somewhat different syntax.

SEE ALSO

       DEALLOCATE [deallocate(7)], PREPARE [prepare(7)]

SQL - Language Statements                                           2010-05-14                                                          EXECUTE(7)
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