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Full Discussion: about READ...please help!
Top Forums UNIX for Dummies Questions & Answers about READ...please help! Post 302101177 by fiol73 on Thursday 28th of December 2006 07:32:11 PM
Old 12-28-2006
about READ...please help!

hi guys i have a question:

i am creating an interactive programme and i need some help on the READ command. let's say that i use the echo command and ask something to my user in the form:

echo 'Please, insert filenames: \c'

then i read his/her answer with:

read answer

i need to test the answer given to see, for example, if the user has really chosen files and not directories for example so i use:

if [[ -d $answer ]]; then
echo 'Attention: you have selected a directory!'
fi

now my problem is this: if the user, instead of just one file, writes 2 or more files?
i know i can write:

read answer1 answer2 etc.

but then it becomes too difficult to check all variables in the IF STATEMENT...and also...what if the user uses more variables than those i have specified? too complicated...

any suggestion on how to include all the possible filenames the user could specify in just one variable to check? (a bit like $@ instead of "$1" "$2" etc.)

hope my question is clear...

thanks. Smilie
 

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QUIZ(6) 							 BSD Games Manual							   QUIZ(6)

NAME
quiz -- random knowledge tests SYNOPSIS
quiz [-t] [-i file] [question answer] DESCRIPTION
The quiz utility tests your knowledge of random facts. It has a database of subjects from which you can choose. With no arguments, quiz displays the list of available subjects. The options are as follows: -t Use tutorial mode, in which questions are repeated later if you didn't get them right the first time, and new questions are presented less frequently to help you learn the older ones. -i Specify an alternative index file. Subjects are divided into categories. You can pick any two categories from the same subject. quiz will ask questions from the first cate- gory and it expects answers from the second category. For example, the command ``quiz victim killer'' asks questions which are the names of victims, and expects you to answer with the cause of their untimely demise, whereas the command ``quiz killer victim'' works the other way around. If you get the answer wrong, quiz lets you try again. To see the right answer, enter a blank line. Index and Data File Syntax The index and data files have a similar syntax. Lines in them consist of several categories separated by colons. The categories are regular expressions formed using the following meta-characters: pat|pat alternative patterns {pat} optional pattern [pat] delimiters, as in pat[pat|pat]pat In an index file, each line represents a subject. The first category in each subject is the pathname of the data file for the subject. The remaining categories are regular expressions for the titles of each category in the subject. In data files, each line represents a question/answer set. Each category is the information for the question/answer for that category. The backslash character (``'') is used to quote syntactically significant characters, or at the end of a line to signify that a continuation line follows. If either a question or its answer is empty, quiz will refrain from asking it. FILES
/usr/share/games/quiz The default index and data files. BUGS
quiz is pretty cynical about certain subjects. BSD
May 31, 1993 BSD
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