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Full Discussion: Ommiting special characters as input - Help
Top Forums Shell Programming and Scripting Ommiting special characters as input - Help Post 302472417 by ultiron on Wednesday 17th of November 2010 06:42:14 AM
Old 11-17-2010
Code:
 
#!/bin/bash
 
echo "enter a letter"
read letter
echo $letter
 
lettercheck=$(echo "$letter" | grep [a-zA-Z])
 
                if [ -z $letter ] #checks if length of string is zero
                then
                        echo "Invalid input. Input is not a letter"
                        
                else
                        echo $letter
 
        fi

thats pretty much it. the code works fine, but when a "\" is entered it just moves onto the next line rather than checking the input at all.
 

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LEARN ABOUT HPUX

wconv

wconv(3C)																 wconv(3C)

NAME

       towupper(), towlower() - translate wide characters

SYNOPSIS

   Remarks:
       These  functions  are compliant with the XPG4 Worldwide Portability Interface wide-character conversion functions.  They parallel the 8-bit
       character conversion functions defined in conv(3C).

DESCRIPTION

       and have as domain a the value of which is representable as a or the value If the argument has any other value, the behavior is	undefined.
       If  the	argument  of  represents  a  lowercase letter, the result is the corresponding uppercase letter.  If the argument of represents an
       uppercase letter, the result is the corresponding lowercase letter.  All other arguments are returned unchanged.

       Definitions for these functions, the types and the value are provided in the header.

EXTERNAL INFLUENCES

   Locale
       The category determines the translations to be done.

   International Code Set Support
       Single-byte and multi-byte character code sets are supported.

AUTHOR

       was developed by IBM, OSF, and HP.

SEE ALSO

       conv(3C), multibyte(3C), wctype(3C), setlocale(3C), lang(5), thread_safety(5).

STANDARDS CONFORMANCE

																	 wconv(3C)
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