05-07-2008
1 - Yeah, that's what I meant. Put the message that the process is starting, BEFORE it starts.
2 - I hadn't copied and tried it myself until now. I got the same error and had to scratch my head a bit before I figured it out. You're going to hate yourself: You have an extra quote at the begining of line TWO!
case vs if ? Use case when there are multiple options. Use if when there aren't.
Note, I would have done it a little different:
read answer
ans=`cat $answer"N" | cut -c1-1 | tr "y" "Y"`
if [ $ans = "Y" ]
This accomplishs a couple things: It adds a default answer. Uses only the first character, doesn't care if it's upper or lower case.
If there were multiple choices, I'd use the same type of logic to get A, B, C... responses, and then use case:
read answer
ans=`cat $answer"X" | cut -c1-1 | tr "a-z" "A-Z"`
case $ans in
Last edited by Dave Miller; 05-07-2008 at 08:48 AM..
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rpmatch(3) Library Functions Manual rpmatch(3)
NAME
rpmatch - Determines whether a response is affirmative or negative
LIBRARY
Standard C Library (libc.a)
SYNOPSIS
#include <stdlib.h>
int rpmatch( const char *response);
PARAMETERS
User input entered in response to a question that requires an affirmative or negative answer.
DESCRIPTION
The rpmatch() function determines whether the string value of the response parameter matches the affirmative or negative response expres-
sion as specified by the LC_MESSAGES category in the program's current locale. Both response expressions, defined in the locale, may be
extended regular expressions.
A possible value of the affirmative expression, yesexpr, for a English-language locale is "^([yY]|[yY][eE][sS])". This expression will
match any value of the response parameter that has consists of the letter Y (in uppercase or lowercase) or the letters YES (in any mixture
of uppercase and lowercase letters).
EXAMPLES
The following example requests a response from the user and uses the rpmatch() function to determine if the response is affirmative or neg-
ative.
#include <stdlib.h> #include <stdio.h> #include <locale.h> #include <string.h> #define SLENGTH 80
main() {
char str[SLENGTH], *eol;
int ans;
(void)setlocale(LC_ALL, "");
printf("Do you want to perform this operation: ");
fgets(str, SLENGTH, stdin);
if ((eol = strchr(str, '
')) != NULL)
*eol = '