Pkzip for

Is not needed for most ZIP extract operations. WinZip always uses PKZIP.EXE to modify ZIP files.WinZip 4.0 added support for PKZIP 2.0, including built-in ZIP extraction, support for the ARJ file format, new toolbar with descriptive pictorial buttons, added a 3-D look to all dialog boxes.WinZip 5.0 added PKZIP-compatible built-in zipping, so PKZIP is not needed for basic archive management. Note that two advanced features, disk-spanning and encryption, still require PKZIP. Added support for Windows-based virus scanners. Added built-in Actions/Test operation for ZIP files. Built-in unzipping is used when running DOS virus scanners. Added support for international characters in archive names and files in archives.WinZip 5.5 added the ability to install, try, and UNINSTALL software distributed in ZIP files.WinZip 5.6 added support for the popular Internet file formats TAR, gzip, and Unix compress.WinZip 6.0 added many Windows 95 features, including tight integration with the Windows 95 shell and Explorer-style dialog boxes. Other enhancements included an improved interface to file viewers, an "Express Setup" option, and better support for virus scanners.WinZip 6.0a features improved Windows 95 drag and drop support.WinZip 7.0 introduced Microsoft's CAB (cabinet) format, Internet Explorer 4.0-style "one click open" interface, Zip comment, registry-based configuration, ARJ 2.60 long file name support, Explorer-style fonts. WinZip Self-Extractor Personal Edition now creates Zip files that span multiple removable disks.WinZip 8.0's Wizard interface was extended to allow create and update Zip files from the Wizard, extract and install from MIME and other encoded files, automatic installation of desktop themes and screen savers; added

In the first case, it makes more sense to contact the person you obtained the zip file from rather than the Info-ZIP software developers, and to make sure that your copy is strictly identical to the original. In the second case, use "unzip zipfile.zip" instead of "unzip zipfile", to let unzip know which file is the zip archive you want to extract.Q. Why doesn't zip do just like PKZIP does?A. Zip is not a PKZIP clone and is not intended to be one. In some cases we feel PKZIP does not do the right thing (e.g., not including pathnames by default); in some cases the operating system itself is responsible (e.g., under Unix it is the shell which expands wildcards, not zip). Info-ZIP's and PKWARE's zipfiles are interchangeable, not the programs. For example, if you are used to the following PKZIP command: pkzip -rP foo *.c you must use instead on Unix: zip -R foo "*.c" (the quotes are needed to let the shell know that it should not expand the *.c argument but instead pass it on to the program, but are not needed on ports that do not expand file paths like MSDOS)Q. Can I distribute zip and unzip sources and/or executables?A. You may redistribute the latest official distributions without any modification, without even asking us for permission. You can charge for the cost of the media (CDROM, diskettes, etc...) and a small copying fee. If you want to distribute modified versions please contact us at www.Info-ZIP.org first. You must not distribute beta versions. The latest official distributions are always on ftp.Info-ZIP.org in directory /pub/infozip and subdirectories and at SourceForge.Q. Can I use the executables of zip and unzip to distribute my software?A. Yes, so long as it is made clear in the product documentation that zip or unzip are not being sold, that the source code is freely available, and that there are no extra or hidden charges resulting from its use by or inclusion with the commercial product. See the Info-ZIP license for more. Here is an example of a suitable notice: NOTE: is packaged on this CD using Info-ZIP's compression utility. The installation program uses UnZip to read zip files from the CD. Info-ZIP's software (Zip, UnZip and related utilities) is freely distributed under the Info-ZIP license and can be obtained as source code or executables from various anonymous-ftp sites, including ftp://ftp.info-zip.org/pub/infozip.Q. Can I use the source code of zip and unzip in my commercial application?A. Yes, as long as the conditions in the Info-ZIP license are met. We recommend you include in your product documentation an acknowledgment and note that the original compression sources are available at www.Info-ZIP.org. If you have special requirements contact us.

To log in if the FTP server requires a login. If a username is not supplied, PKZIP tries to log in as the user ftp.passphrase (optional) is the passphrase associated with the user account. If no passphrase is given, PKZIP tries an empty passphrase. A colon is not allowed in the passphrase as this character is used to separate username, passphrase, and account values.account (optional) is for use only with FTP servers that require additional authentication. Do not specify the account for servers that do not require it.server is the FTP server namepath (relative path or full path; optional) is the path to the destination of the transferred file on the server. If you omit a path, PKZIP transfers the archive to the default folder on the FTP server.Include the movearchive option to delete from your hard disk an archive that you no longer want after transferring it:pkzipc -add -movearchive -ftp=wash/home/jefferson mydocs.zip *.docIf for some reason an archive is not transferred to the FTP server, movearchive does not delete it. The ftp option can only send ZIP archives that are physical files. It cannot send ZIP archives from STDIN, STDOUT, or special files (named pipes, sockets).Securely Transferring an Archive with SFTPsftp UNIX users may also use the SSH File Transfer Protocol (sftp) to send ZIP archives through a secure channel. It works exactly as ftp does, as shown in this example:pkzipc -add -sftp=jefferson:monticello:vip@wash/home/thomas mydocs.zip *.docSending an Archive by EmailmailTo, mailFrom, mailServer, mailBCC, mailBody, mailCC, mailOptions, mailReplyTo, mailSubjectYou can send a