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Full Discussion: Replace commas with newlines
Top Forums Shell Programming and Scripting Replace commas with newlines Post 302643203 by Corona688 on Friday 18th of May 2012 04:10:03 PM
Old 05-18-2012
You don't need a file to do that.

If you did have a file, that'd be the wrong way to use one. See useless use of backticks and useless use of cat.

It's time to learn what the special IFS variable does Smilie It's a list of characters that the shell splits on, by default any whitespace.
Code:
echo "Type the Container ID for every container that you want subnets exported"
echo "for (with comma between each one, for example... 1,45,98)"
echo -n "if you want every one listed, then just type ALL in caps and press [ENTER]: "
read containerid

OLDIFS="$IFS" # Save the default for later
IFS="," # This alters what variables split upon.

for X in $containerid # Usually, would split on spaces, but now splits on ,
do
        echo "containerid $x"
done

IFS="$OLDIFS" # Put it back, or things won't split normally later

If you had your users type in 1 2 3 instead of commas, you wouldn't need to alter IFS at all.
 

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URI::URL(3)						User Contributed Perl Documentation					       URI::URL(3)

NAME
URI::URL - Uniform Resource Locators SYNOPSIS
$u1 = URI::URL->new($str, $base); $u2 = $u1->abs; DESCRIPTION
This module is provided for backwards compatibility with modules that depend on the interface provided by the "URI::URL" class that used to be distributed with the libwww-perl library. The following differences exist compared to the "URI" class interface: o The URI::URL module exports the url() function as an alternate constructor interface. o The constructor takes an optional $base argument. The "URI::URL" class is a subclass of "URI::WithBase". o The URI::URL->newlocal class method is the same as URI::file->new_abs. o URI::URL::strict(1) o $url->print_on method o $url->crack method o $url->full_path: same as ($uri->abs_path || "/") o $url->netloc: same as $uri->authority o $url->epath, $url->equery: same as $uri->path, $uri->query o $url->path and $url->query pass unescaped strings. o $url->path_components: same as $uri->path_segments (if you don't consider path segment parameters) o $url->params and $url->eparams methods o $url->base method. See URI::WithBase. o $url->abs and $url->rel have an optional $base argument. See URI::WithBase. o $url->frag: same as $uri->fragment o $url->keywords: same as $uri->query_keywords o $url->localpath and friends map to $uri->file. o $url->address and $url->encoded822addr: same as $uri->to for mailto URI o $url->groupart method for news URI o $url->article: same as $uri->message SEE ALSO
URI, URI::WithBase COPYRIGHT
Copyright 1998-2000 Gisle Aas. perl v5.16.3 2012-02-11 URI::URL(3)
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