Unix QUestion, help please

**mshah2k** · 01-28-2003

www.geocities.com/mshah2k/m.html

First, I set out to prove him wrong and thought that I could do it myself, but I was wrong

. So I am posting here in hopes that someone will help me because now I am running out of time LOL. We havent done much scripting at all in class, so I am stuck. Here is what I have so far:

I would do something like
'ls -R -l'
to get all recursive listing of directories and then process that somehow??

And then I could do something like:

arg=$1
cmd="find . -name \""$arg"\"
shift 1
for i
do
cmd="$cmd -o -name \"$i\""
done

That'll get you a command that finds everything with any of the names you specified. Then just do

$cmd | sort | while read i
do
echo "<A HREF=\"$i\">$i</A>"
done

Or something, I dont know, a lot of this is just winging it on my part, it doesnt compile anyway, so it may be off by a LONGSHOT. I would appreciate any and all help with this subject.

**majorwoo** · 01-28-2003

what kind on assignment is this that it is being posted on a geocrap webpage?

**Dolda2000** · 01-28-2003

Well, I can't really say that the teacher seemed all too experienced, with capitalized file names, ugly tags and I don't know all. But it doesn't matter, it wasn't him I was supposed to help out, right? But please tell him that I said so. It's the kind of things that teachers need to here from time to time. =)
It didn't say whether subdirectories should be indexed if not specified, I'm going with that they should only be indexed if specified, since he used "GenerateIndex *.pdf", which, of course, won't work very well for subdirectories. Here's a simple version:

Code:

#/bin/sh

indexdir &#40;&#41;
&#123;
    if &#91; -e "$indexname" &#93;; then
        return 0;
    fi
    rm "$indexname"    #To get the create perms from the umask
    cat >"$indexname" <<-EOF
        <html>
        <head><title>Index for `pwd`</title></head>
        <body>
EOF
    while &#91;  $# -gt 0 &#93;; do
        for file in $1; do
            if &#91; -f $file &#93;; then
                echo "<a href=\"$file\">$file</a>" >>"$indexname"
            fi
            if &#91; -d $file &#93;; then
                &#40;cd "$file"; indexdir "*"&#41;
            fi
        done
        shift
    done
    cat >>"$indexname" <<-EOF
        </body>
        </html>
EOF
&#125;

$indexname="$1"
shift
if &#91; $# -eq 0 &#93;; then
    indexdir "*"
else
    indexdir "$@"
fi

That's without the commenting code. I can do that, too, if you really want me to.
I take no responsibility for all the typos in there. I just wrote it down, so there's bound to be at least a couple of wrongs.

**Dolda2000** · 01-28-2003

OK, I found the first ones. Firstly, I happened to write $indexname="$1", as you can see. Remove the dollar sign. Also, to avoid a stupid warning, use rm -f "$indexname instead of just rm "$indexname". It also doesn't do any error checking if the index file name isn't given. But maybe that not such a big problem.

**Dolda2000** · 01-28-2003

Also, a thing worth mentioning. It's not a big deal, but if you don't want the html files to look weirder than they must, be sure to indent with tabs, not spaces, in the here-documents to cat.

**genlee** · 01-28-2003

To bad you can't use perl for that

**mshah2k** · 01-28-2003

ALL subdirectories within the folders should be indexed. I dont think you have to specify what directories should be indexed and what shouldnt.
If the user types this:

GenerateIndex index.html *.ps *.pdf *.txt

Then it should look at ALL directories and subdirectories and sub-subdirectories...etc..and create an index file in EACH of them. THere is no option for specifying which directories to index, you must do all of them.

what kind on assignment is this that it is being posted on a geocrap webpage?

Actually its posted on a class web site but you need a username/password to access it, so I had to put it on a geocities website. I havent had any problems with geocities, do you recommend something better.

Well, I can't really say that the teacher seemed all too experienced, with capitalized file names, ugly tags and I don't know all. But it doesn't matter, it wasn't him I was supposed to help out, right? But please tell him that I said so. It's the kind of things that teachers need to here from time to time. =)

To tell ya the truth, I am not sure he has ever been out of Academia, but he seems nice enough and I dont want to get on his bad side LOL.

**Dolda2000** · 01-28-2003

You know, if you run GenerateIndex index.html *.ps *.pdf *.txt, the shell will only pass the names of all matching files in the cwd, not the wildcards themselves. For example, say you have the following files in your cwd:

file1.ps
file2.pdf
file3.txt

Then you run the command exactly as shown there, the actual command that is run by the shell is GenerateIndex index.html file1.ps file2.pdf file3.txt, not GenerateIndex index.html *.ps *.pdf *.txt. That means that those files are pretty unlikely to be found in any subdirectories, except accidentally.
That is why I thought that directories should only be indexed if their names are given on the cmdline or match any quoted wildcard given on the cmdline. Are you sure that is not the case?

**Dolda2000** · 01-28-2003

Some side notes:

Originally Posted by mshah2k

I havent had any problems with geocities, do you recommend something better.

Run your own HTTP server? It's really not that hard, unless you're on dial-up.

Originally Posted by genlee

To bad you can't use perl for that

How comes I was almost suspecting that comment? =)

Originally Posted by majorwoo

what kind on assignment is this that it is being posted on a geocrap webpage?

If you would have looked at the address, you would have seen his user name there... I don't know if I am the one who should pick on things such as overlooking details, though... =)

**mshah2k** · 01-28-2003

No, all directories need to be indexed. Hmm I wasnt aware that the shell would do only this. I will ask my intructor tomorrow about it and report back

.

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