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Full Discussion: need help in IF condition!!
Top Forums Shell Programming and Scripting need help in IF condition!! Post 302282805 by era on Monday 2nd of February 2009 12:06:42 AM
Old 02-02-2009
Code:
test -s file66.txt || { mailx -s "file66.txt size zero" you@example.net </dev/null; exit 99; }
echo "Shell Script Worked"

The braces are used when there are multiple commands you want to execute after || but you could also write this as an "if then else" if that's more convenient. Then it's easier to add commands, too.

Code:
if test -s file66.txt
then
    mailx -s "file66.txt size zero" you@example.net </dev/null
    exit 99
fi
echo "Shell script worked"

The braces and the semicolons are not necessary here, because everything up to "fi" (or "else") is executed when the condition matches. The || { stuff; } syntax is just basically a shorthand for when you want to cram stuff into a one-liner.
 

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LEARN ABOUT DEBIAN

multimarkdown

MULTIMARKDOWN(1p)					User Contributed Perl Documentation					 MULTIMARKDOWN(1p)

NAME

       multimarkdown - Convert MultiMarkdown syntax to (X)HTML

DESCRIPTION

       This program is distributed as part of Perl's Text::MultiMarkdown module, illustrating sample usage.

       multimarkdown can be invoked on any file containing MultiMarkdown-syntax, and will produce the corresponding (X)HTML on STDOUT:

	   $ cat file.txt
	   [MultiMarkdown][] *extends* the very well-known [Markdown][] syntax.

	   [MultiMarkdown]: http://fletcherpenney.net/What_is_MultiMarkdown
	   [Markdown]: http://daringfireball.net/projects/markdown/

	   $ multimarkdown file.txt
	   <p><a href="http://fletcherpenney.net/What_is_MultiMarkdown">MultiMarkdown</a> <em>extends</em> the very well-known <a href="http://daringfireball.net/projects/markdown/">Markdown</a> syntax.</p>

       If no file is specified, it will expect its input from STDIN:

	   $ echo "A **simple** test" | multimarkdown
	   <p>A <strong>simple</strong> test</p>

OPTIONS

       version
	   Shows the full information for this version

       shortversion
	   Shows only the version number

       html4tags
	   Produce HTML 4-style tags instead of XHTML - XHTML requires elements that do not wrap a block (i.e. the "hr" tag) to state they will
	   not be closed, by closing with "/>". HTML 4-style will plainly output the tag as it comes:

	       $ echo '---' | multimarkdown
	       <hr />
	       $ echo '---' | multimarkdown --html4tags
	       <hr>

       help
	   Shows this documentation

AUTHOR

       Copyright 2004 John Gruber

       Copyright 2006 Fletcher Penny

       Copyright 2008 Tomas Doran

       The manpage was written by Gunnar Wolf <gwolf@debian.org> for its use in Debian systems, but can be freely used elsewhere.

       For full licensing information, please refer to Text::MultiMarkdown.pm's full documentation.

SEE ALSO

       Text::MultiMarkdown, <http://fletcherpenney.net/What_is_MultiMarkdown>

perl v5.12.4							    2011-07-11							 MULTIMARKDOWN(1p)
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