Archive files in InfoZIP format . These files can be retrieved using unzip. The files are compressed as they are added to the archive. Compression ratios of 2:1 to 3:1 are common for text files. zip may also replace files in an existing archive. With no arguments, display the help information. See also zipinfo and unzip.
Default options may be placed in the ZIPOPT environment
variable, with the exceptions of
-x. Multiple options may be included in
The zip source code is readily available from http://www.info-zip.org/. There are a number of important notes in the unzip entry. Go there for more information.
The following list intentionally omits obsolete options and those that are specific to non-Unix platforms.
Use path as the location to store the temporary ZIP archive while updating an existing one. When done, copy the temporary archive over the new one. Useful primarily when there’s not enough disk space on the filesystem containing the original archive.
Add one-line comments for each file. zip first performs any file operations and then prompts you for a comment describing each file.
Delete entries from a ZIP archive. Filenames to be deleted must be entered in uppercase if the archive was created by PKZIP on an MS-DOS system.
Don’t create entries in the archive for directories. Usually entries are created, so that attributes for directories may be restored upon extraction.
Encrypt the archive. ...