Case switching Post: 302943386

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Top Forums Shell Programming and Scripting Case switching Post 302943386 by Tuxidow on Friday 8th of May 2015 04:47:11 AM

05-08-2015

Registered User

Case switching

Hello Folks

I am writing this simple program but I am stuck at this point. Here is the snippet from my script where I have issues.

Code:

3)     echo "Current Directory:   $(pwd)                Menu 3"

      echo -e "Enter a file name\n"
      read fname
      if [ -f $name ]
      then

              if [ -x $name ]
              then
                cat $name
              else
                echo "You do not have access to file $name"
              fi
      else
                 echo "File $name doesn't exist"
        
                echo -e "Press Enter to return to the Main Menu\c"
                read dummy
        fi
;;

4)      clear
        
        echo "Current Directory:   $(pwd)                Menu 4"

        echo  -e "Enter a directory name\n"
        read dname
        if [ -d $dname ]
        then
                cd $dname
                if [ $? -eq 0 ]
                then
                        continue
                else
                        echo "Directory $dname not accessible"
        
                fi
        else
                echo "Subdirectory $dname does not exist."
        
                echo -e "Press Enter to return to the Main Menu\c"
                read dummy
        fi

This is a section of the script where it takes entry either 3 or 4. If 3 is selected it prompts for the user to enter filename and if the user is hitting just enter and not any filename, it should return to main menu. But that's not happening, its just looping around and waiting for an input. But if 4 is selected and an enter is pressed with out directory name it goes to that cd $dname part and moves to main menu. Since $dname is empty as the user has not provided any value it goes to home directory of the user.

My requirement is that the script should go back to main menu if the user hits just "enter" with out any value. How can I achieve that?

Tuxidow

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LEARN ABOUT DEBIAN

ldns_dname_compare

ldns(3) 						     Library Functions Manual							   ldns(3)

NAME

       ldns_dname_compare, ldns_dname_interval-

SYNOPSIS

       #include <stdint.h>
       #include <stdbool.h>

       #include <ldns/ldns.h>

       int ldns_dname_compare(const ldns_rdf *dname1, const ldns_rdf *dname2);

       int ldns_dname_interval(const ldns_rdf *prev, const ldns_rdf *middle, const ldns_rdf *next);

DESCRIPTION

       ldns_dname_compare() Compares the two dname rdf's according to the algorithm for ordering in RFC4034 Section 6.
	      dname1: First dname rdf to compare
	      dname2: Second dname rdf to compare
	      Returns -1 if dname1 comes before dname2, 1 if dname1 comes after dname2, and 0 if they are equal.

       ldns_dname_interval()  check if middle lays in the interval defined by prev and next prev <= middle < next. This is usefull for nsec check-
	      ing
	      prev: the previous dname
	      middle: the dname to check
	      next: the next dname return 0 on error or unknown, -1 when middle is in the interval, +1 when not

AUTHOR

       The ldns team at NLnet Labs. Which consists out of Jelte Jansen and Miek Gieben.

REPORTING BUGS

       Please report bugs to ldns-team@nlnetlabs.nl or in our bugzilla at http://www.nlnetlabs.nl/bugs/index.html

COPYRIGHT

       Copyright (c) 2004 - 2006 NLnet Labs.

       Licensed under the BSD License. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

SEE ALSO

       ldns_dname_is_subdomain.  And perldoc Net::DNS, RFC1034, RFC1035, RFC4033, RFC4034  and RFC4035.

REMARKS

       This manpage was automaticly generated from the ldns source code by use of Doxygen and some perl.

								    30 May 2006 							   ldns(3)