[dpdk-dev] [Bug 419] usertools/dpdk-setup.sh crashes on non-alphanumeric input

[dpdk-dev] [Bug 419] usertools/dpdk-setup.sh crashes on non-alphanumeric input

[bugzilla]

https://bugs.dpdk.org/show_bug.cgi?id=419

            Bug ID: 419
           Summary: usertools/dpdk-setup.sh crashes on non-alphanumeric
                    input
           Product: DPDK
           Version: 20.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: other
          Assignee: dev@dpdk.org
          Reporter: sarosh.arif@emumba.com
  Target Milestone: ---

While using usertools/dpdk-setup.sh if the user enters any non-alphanumeric
character, by mistake perhaps, instead of giving an error and allowing user to
re-enter his choice, the dpdk-setup script crashes giving the following
message:

./dpdk-setup.sh: line 598: >: syntax error: operand expected (error token is
">")

A possible solution can be to put a conditional statement before the execution
of line 598 which is:
${OPTIONS[our_entry]} ${our_entry}
To make sure this statement is only executed when the input is correct.

This error can be replicated easily by following these steps:
1. Enter these commands on the terminal
cd dpdk/usertools
./dpdk-setup.sh
2. When prompted, enter any non-alphanumeric character such as ">"

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