Exit always returns 0 Post: 303021508

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Top Forums Shell Programming and Scripting Exit always returns 0 Post 303021508 by Corona688 on Saturday 11th of August 2018 12:39:59 PM

08-11-2018

Registered User

find simply doesn't return nonzero unless something prevents it from doing what you asked it to do. If it tries to do open a directory and the system tells it "Permission denied", that's an error for example. "Zero files" on the other hand is not an error, just a fact.

Anyway your use of $RETVAL is wrong, because nothing ever changes it. It remains the same throughout your entire program. Using $? instead would also be wrong, because everything changes it -- every time you run any program or test any condition, that changes the value of $?. Even [ $? -eq 0 ] changes the value of $? afterwards. If you want to do more complicated logic in your shell script, use proper if/then statements, case statements, and the like.

What I might try is something like this:

Code:

# Always quote your variables
find "${Docs_Backups}" -mindepth 1 -mtime +3 -print -delete > "/tmp/$$"

if [ -s "/tmp/$$" ]
then
        echo "Found some files"
else
        echo "Found zero files"
fi

rm -f "/tmp/$$"

/tmp/$$ is a simple way of making a random temporary file, since $$ is your process ID and ought to be unique while your program is running.

-s is true when the file has any contents, false when it has no contents.

Last edited by Corona688; 08-11-2018 at 01:48 PM..

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LEARN ABOUT DEBIAN

css::dom::rule::media

CSS::DOM::Rule::Media(3pm)				User Contributed Perl Documentation				CSS::DOM::Rule::Media(3pm)

NAME

       CSS::DOM::Rule::Media - CSS @media rule class for CSS::DOM

VERSION

       Version 0.14

SYNOPSIS

	 use CSS::DOM;
	 my $media_rule = CSS::DOM->parse(
	     '@media print { body { background: none } }'
	 )->cssRules->[0];

	 # OR:
	 use CSS::DOM::Rule::Media;
	 my $media_rule = new CSS::DOM::Rule::Media $parent;
	 push @{$media_rule->media}, 'print';
	 $media_rule->insertRule('body { background: none }')

DESCRIPTION

       This module implements CSS @media rules for CSS::DOM. It inherits from CSS::DOM::Rule and implements the CSSMediaRule DOM interface.

METHODS

       media
	   Returns the MediaList associated with the @media rule (or a plain list in list context). This defaults to an empty list. You can pass a
	   comma-delimited string to the MediaList's "mediaText" method to set it.

       cssRules
	   In scalar context, this returns a CSS::DOM::RuleList object (simply a blessed array reference) of CSS::DOM::Rule objects. In list
	   context it returns a list.

       insertRule ( $css_code, $index )
	   Parses the rule contained in the $css_code, inserting it the @media rule's list of subrules at the given $index.

       deleteRule ( $index )
	   Deletes the rule at the given $index.

SEE ALSO

       CSS::DOM

       CSS::DOM::Rule

       CSS::DOM::MediaList

perl v5.10.1							    2010-12-10						CSS::DOM::Rule::Media(3pm)