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Top Forums Shell Programming and Scripting 'Combining 2 while loops together' Post 302281972 by Firestarter on Friday 30th of January 2009 12:43:41 AM
Old 01-30-2009
'Combining 2 while loops together'

I need help with 'combining 2 while loops' together.
The 1st while loop reads an input and checks to see if the input is a blank.
But at the same time, I want to check if the input (if its not blank) is a number or a word. As I am using the case, I cannot use any if loops.

Really appreciate anyone who can help me. Thank you very much.

#!/bin/bash

read Name in
while [ -z "${Name}" ] #Ensure that there are no blank inputs
do
echo "You cannot input a blank name. Enter a valid name"
read Name
done

read Check in
while [ `echo $Check | grep "[^A-Z]"` ] #Check that user types in character from A-Z only
do
echo "Invalid input. Please enter characters from A-Z";
read Check;
done
 

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thai/thinp.h(3) 						      libthai							   thai/thinp.h(3)

NAME
thai/thinp.h - Thai string input sequence filtering. SYNOPSIS
Data Structures struct thinpconv_t Input sequence correction info. Enumerations enum thstrict_t { ISC_PASSTHROUGH = 0, ISC_BASICCHECK = 1, ISC_STRICT = 2 } Strictness of input sequence checking, according to WTT 2.0. Functions int th_isaccept (thchar_t c1, thchar_t c2, thstrict_t s) Check for acceptance of input sequence. int th_validate (struct thcell_t context, thchar_t c, struct thinpconv_t *conv) Check and try to correct input sequence. Detailed Description Thai string input sequence filtering. Enumeration Type Documentation enum thstrict_t Strictness of input sequence checking, according to WTT 2.0. Enumerator ISC_PASSTHROUGH No check ISC_BASICCHECK Basic check ISC_STRICT Strict check Function Documentation int th_isaccept (thchar_tc1, thchar_tc2, thstrict_ts) Check for acceptance of input sequence. Parameters: c1 : previous character c2 : the newly input character s : strictness level Returns: non-zero if accepted, 0 otherwise Checks if, according to WTT 2.0 strictness level s, c2 is allowed after c1. int th_validate (struct thcell_tcontext, thchar_tc, struct thinpconv_t *conv) Check and try to correct input sequence. Parameters: context : previous cell c : the newly input character conv : the storage for resulting correction info Returns: 0 if the input is to be rejected non-zero otherwise. Given the previous cell as context, edit the input buffer using the given input c, maintaining WTT canonical order, and do some convenient correction in conv. Author Generated automatically by Doxygen for libthai from the source code. Version 0.1.14 Tue Jun 17 2014 thai/thinp.h(3)
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