Value

Description

-d

Reconstruct sub-directory structure from archive.

-f

Freshen: Extract files only if they already exist on disk and the archive version is the newer of the two.

-j[hnrs] 

Mask file attributes (Hidden, Read-Only, and/or System):  A file is extracted with its attributes as-is, unless you choose to mask attributes. When specifying -j sub-options, list all of the options you want after the switch (e.g., -jhs).The sub-option n specifies the Novell NetWare Shareable attribute (this attribute is always screened out when dealing with local drives, since it only applies to networked drives).

-n

Newer: Extract files if they do not exist on disk, or if they exist but the archive version is newer.

-o[-]

How to handle overwriting disk files. With just "o", always overwrite existing disk files. With "o-", never overwrite existing disk files. See the "r" switch for additional options.

-r[+-]

How to handle overwriting a read-only file. The default handling is the same as the switch alone, which refuses to overwrite read-only files and returns an error code. The r- option says to skip extracting any file if it would overwrite a read-only file. The r+ option says to overwrite files in all cases.

-t

Test: Verify files by checking their CRC values. This provides solid assurance that an archive has not been damaged (by file transfer failure, disk problems, etc.).

-.o

Skip a file if it can't be extracted (such as if the file already exists on the disk and is locked by another application), instead of terminating the unzip operation.