05-07-2017
Checking the user input in perl for characters and length
My question is basically as the title says. How can I check a user inputted string is only certain characters long (for example, 3 characters long) and how do I check a user inputted string only contains certain characters (for example, it should only contain the characters 'u', 'a', 'g', and 'c') all in perl.
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LEARN ABOUT REDHAT
rexecd
REXECD(8) BSD System Manager's Manual REXECD(8)
NAME
rexecd -- remote execution server
SYNOPSIS
rexecd
DESCRIPTION
Rexecd is the server for the rexec(3) routine. The server provides remote execution facilities with authentication based on user names and
passwords.
Rexecd listens for service requests at the port indicated in the ``exec'' service specification; see services(5). When a service request is
received the following protocol is initiated:
1. The server reads characters from the socket up to a NUL ('