1 UNZIP UnZip is used to extract files compressed and packaged by Zip (see HELP ZIP for information on ZIP). For a brief help on Zip and Unzip, run each without specifying any parameters on the command line. UNZIP will list, test, or extract from a ZIP archive. ZIP archives are commonly found on MS-DOS systems; a VMS version of ZIP can also be found here. Archive member extraction is implied by the absence of the -c, -p, -t, -l, -v or -z options. All archive members are processed unless a filespec is provided to specify a subset of the archive members. Format: UNZIP [-cflptuvxz[ajnoqCLVX]] file[.zip] [list] [-x xlist] [-d out_dir] 2 Parameters file[.zip] File specification for the ZIP archive(s) with optional wildcards. UnZip will perform actions specified for every zipfile matching the specification. Default file specification is SYS$DISK:[].ZIP. Note that self-extracting ZIP files are supported; just specify the .EXE suffix yourself. [list] An optional list of archive members to be processed; if no list is given, all archive members are processed. Expressions may be used to match multiple members. Expressions should be enclosed in double-quotes to prevent interpretation by DCL. Multiple filenames should be separated by blanks. Each file specification is similar to a Unix egrep expression and may contain: * matches a sequence of 0 or more characters ? matches exactly 1 character [...] matches any single character found inside the brackets; ranges are specified by a beginning character, a hyphen, and an ending character. If a '!' or '^' immediately follows the left bracket, then any character not in the given range is matched. [-x xlist] An optional list of archive members to be excluded from processing. The xlist overrides any files included in the normal list. [-d out_dir] Optional directory specification to be used as target root directory for files to be extracted. Directory should be specified in "[.foo]" format rather than "foo.dir" or "foo/" format. 2 Options The default action of UnZip is to extract all zipfile entries. The following options and modifiers can be provided: -Z ZipInfo mode -c extract files to SYS$OUTPUT (terminal) -f freshen existing files (replace if newer); create none -l list archive files (short format) -p extract files to SYS$OUTPUT; no informational messages -t test archive files -u update existing files; create new ones if needed -v list archive files (verbose format) -z display only the archive comment MODIFIERS -a extract text files in standard VMS text file format -aa extract all files as text -j junk paths (don't recreate archive's directory structure) -n never overwrite existing files; don't prompt -o OK to overwrite files without prompting -q perform operations quietly (-qq => even quieter) -C match filenames case-insensitively -L convert filenames to lowercase if created under DOS, VMS, etc. -V retain (VMS) file version numbers -X restore owner/protection info (may require privileges) Note that uppercase options (-C, -L, -V and -X) must be specified in quotes. For example: unzip "-VX" -a zipfile In addition, default options may be specified via the UNZIP_OPTS logical. For example, the following will cause UnZip to restore owner/protection information and perform all operations at quiet-level 1 by default: define UNZIP_OPTS "-qX" Note that the quotation marks here are required to preserve lowercase options (opposite of the command-line behavior). To negate a default option on the command line, add one or more minus signs before the option letter, in addition to the leading switch character `-': unzip --ql zipfile or unzip -l-q zipfile At present it is not possible to decrement an option below zero--that is, more than a few minuses have no effect. UNZIP_OPTS may be defined as a symbol rather than a logical, but if both are defined, the logical is used. 2 Authors Info-ZIP; currently maintained by Greg Roelofs. VMS support maintained by Igor Mandrichenko and Hunter Goatley. Originally based on a program by Samuel H. Smith. VMS on-line help ported from UNZIP.DOC by Hunter Goatley.