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Full Discussion: Shell Script Explanation
Top Forums Shell Programming and Scripting Shell Script Explanation Post 302430725 by a_programmer on Friday 18th of June 2010 12:56:43 PM
Old 06-18-2010
Its called KSH Variable substitution. There are a lot of things that you can do with it. Some of the most common uses are to strip out file extensions, get directory/file names from paths etc.

Code:
> path=/home/test/data/xyz.zip
> file=${path##*/}     # Strip out everything from the left of 'path' till the last '/'
> dir=${path%/*}        # Strip out the file name
> filename=${file%.*}
> fileext=${file##*.}
> echo $dir, $file, $filename, $fileext
/home/test/data, xyz.zip, xyz, zip

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ZIPARCHIVE.OPEN(3)							 1							ZIPARCHIVE.OPEN(3)

ZipArchive::open - Open a ZIP file archive

SYNOPSIS
mixed ZipArchive::open (string $filename, [int $flags]) DESCRIPTION
Opens a new zip archive for reading, writing or modifying. PARAMETERS
o $filename - The file name of the ZIP archive to open. o $flags - The mode to use to open the archive. o ZipArchive::OVERWRITE o ZipArchive::CREATE o ZipArchive::EXCL o ZipArchive::CHECKCONS RETURN VALUES
o $Error codes - Returns TRUE on success or the error code. o ZipArchive::ER_EXISTS File already exists. o ZipArchive::ER_INCONS Zip archive inconsistent. o ZipArchive::ER_INVAL Invalid argument. o ZipArchive::ER_MEMORY Malloc failure. o ZipArchive::ER_NOENT No such file. o ZipArchive::ER_NOZIP Not a zip archive. o ZipArchive::ER_OPEN Can't open file. o ZipArchive::ER_READ Read error. o ZipArchive::ER_SEEK Seek error. EXAMPLES
Example #1 Open and extract <?php $zip = new ZipArchive; $res = $zip->open('test.zip'); if ($res === TRUE) { echo 'ok'; $zip->extractTo('test'); $zip->close(); } else { echo 'failed, code:' . $res; } ?> Example #2 Create an archive <?php $zip = new ZipArchive; $res = $zip->open('test.zip', ZipArchive::CREATE); if ($res === TRUE) { $zip->addFromString('test.txt', 'file content goes here'); $zip->addFile('data.txt', 'entryname.txt'); $zip->close(); echo 'ok'; } else { echo 'failed'; } ?> PHP Documentation Group ZIPARCHIVE.OPEN(3)
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