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ZIPINFO(1L)                                                        ZIPINFO(1L)



NAME
       zipinfo - list detailed information about a ZIP archive

SYNOPSIS
       zipinfo [-12smlvhMtTz] file[.zip] [file(s) ...] [-x xfile(s) ...]

       unzip -Z [-12smlvhMtTz] file[.zip] [file(s) ...] [-x xfile(s) ...]

DESCRIPTION
       zipinfo  lists technical information about files in a ZIP archive, most commonly found on MS-DOS systems.  Such
       information includes file access permissions, encryption status, type of  compression,  version  and  operating
       system  or file system of compressing program, and the like.  The default behavior (with no options) is to list
       single-line entries for each file in the archive, with header and trailer lines providing  summary  information
       for  the  entire  archive.  The format is a cross between Unix ''ls -l'' and ''unzip -v'' output.  See DETAILED
       DESCRIPTION below.  Note that zipinfo is the same program as unzip (under Unix, a link to it); on some systems,
       however, zipinfo support may have been omitted when unzip was compiled.

ARGUMENTS
       file[.zip]
              Path of the ZIP archive(s).  If the file specification is a wildcard, each matching file is processed in
              an order determined by the operating system (or file system).  Only the filename can be a wildcard;  the
              path  itself  cannot.   Wildcard  expressions are similar to Unix egrep(1) (regular) expressions 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 char-
                     acter,  a  hyphen, and an ending character.  If an exclamation point or a caret ('!' or '^') fol-
                     lows the left bracket, then the range of characters within the brackets is complemented (that is,
                     anything except the characters inside the brackets is considered a match).  To specify a verbatim
                     left bracket, the three-character sequence ''[[]'' has to be used.

              (Be sure to quote any character that might otherwise be interpreted or modified by the operating system,
              particularly under Unix and VMS.)  If no matches are found, the specification is assumed to be a literal
              filename; and if that also fails, the suffix .zip is appended.  Note that self-extracting ZIP files  are
              supported, as with any other ZIP archive; just specify the .exe suffix (if any) explicitly.

       [file(s)]
              An  optional  list of archive members to be processed, separated by spaces.  (VMS versions compiled with
              VMSCLI defined must delimit files with commas instead.)  Regular expressions (wildcards) may be used  to
              match multiple members; see above.  Again, be sure to quote expressions that would otherwise be expanded
              or modified by the operating system.

       [-x xfile(s)]
              An optional list of archive members to be excluded from processing.

OPTIONS
       -1     list filenames only, one per line.  This option excludes all others; headers, trailers and zipfile  com-
              ments are never printed.  It is intended for use in Unix shell scripts.

       -2     list  filenames  only, one per line, but allow headers (-h), trailers (-t) and zipfile comments (-z), as
              well.  This option may be useful in cases where the stored filenames are particularly long.

       -s     list zipfile info in short Unix ''ls -l'' format.  This is the default behavior; see below.

       -m     list zipfile info in medium Unix ''ls -l'' format.  Identical to the -s output, except that the compres-
              sion factor, expressed as a percentage, is also listed.

       -l     list  zipfile info in long Unix ''ls -l'' format.  As with -m except that the compressed size (in bytes)
              is printed instead of the compression ratio.

       -v     list zipfile information in verbose, multi-page format.

       -h     list header line.  The archive name, actual size (in bytes) and total number of files is printed.

       -M     pipe all output through an internal pager similar to the Unix more(1) command.  At the end of a  screen-
              ful  of  output, zipinfo pauses with a ''--More--'' prompt; the next screenful may be viewed by pressing
              the Enter (Return) key or the space bar.  zipinfo can be terminated by pressing the ''q''  key  and,  on
              some systems, the Enter/Return key.  Unlike Unix more(1), there is no forward-searching or editing capa-
              bility.  Also, zipinfo doesn't notice if long lines wrap at the edge of the screen, effectively  result-
              ing  in  the  printing of two or more lines and the likelihood that some text will scroll off the top of
              the screen before being viewed.  On some systems the number of available lines  on  the  screen  is  not
              detected, in which case zipinfo assumes the height is 24 lines.

       -t     list  totals for files listed or for all files.  The number of files listed, their uncompressed and com-
              pressed total sizes , and their overall compression factor is printed; or, if only the  totals  line  is
              being  printed, the values for the entire archive are given.  The compressed total size does not include
              the 12 additional header bytes of each encrypted entry. Note that the total compressed (data) size  will
              never  match  the  actual zipfile size, since the latter includes all of the internal zipfile headers in
              addition to the compressed data.

       -T     print the file dates and times in a sortable decimal format (yymmdd.hhmmss).  The default date format is
              a more standard, human-readable version with abbreviated month names (see examples below).

       -U     [UNICODE_SUPPORT  only] modify or disable UTF-8 handling.  When UNICODE_SUPPORT is available, the option
              -U forces unzip to escape all non-ASCII characters from  UTF-8  coded  filenames  as  ''#Uxxxx''.   This
              option is mainly provided for debugging purpose when the fairly new UTF-8 support is suspected to mangle
              up extracted filenames.

              The option -UU allows to entirely disable the recognition of UTF-8 encoded filenames.  The  handling  of
              filename codings within unzip falls back to the behaviour of previous versions.

       -z     include the archive comment (if any) in the listing.

DETAILED DESCRIPTION
       zipinfo  has  a  number of modes, and its behavior can be rather difficult to fathom if one isn't familiar with
       Unix ls(1) (or even if one is).  The default behavior is to list files in the following format:

  -rw-rws---  1.9 unx    2802 t- defX 11-Aug-91 13:48 perms.2660

       The last three fields are the modification date and time of the file, and its name.  The case of  the  filename
       is  respected;  thus  files  that come from MS-DOS PKZIP are always capitalized.  If the file was zipped with a
       stored directory name, that is also displayed as part of the filename.

       The second and third fields indicate that the file was zipped under Unix with version 1.9  of  zip.   Since  it
       comes  from  Unix,  the  file  permissions at the beginning of the line are printed in Unix format.  The uncom-
       pressed file-size (2802 in this example) is the fourth field.

       The fifth field consists of two characters, either of which may take on several values.   The  first  character
       may  be either 't' or 'b', indicating that zip believes the file to be text or binary, respectively; but if the
       file is encrypted, zipinfo notes this fact by capitalizing the character ('T' or 'B').   The  second  character
       may  also take on four values, depending on whether there is an extended local header and/or an ''extra field''
       associated with the file (fully explained in PKWare's APPNOTE.TXT, but basically analogous to pragmas  in  ANSI
       C--i.e.,  they  provide a standard way to include non-standard information in the archive).  If neither exists,
       the character will be a hyphen ('-'); if there is an extended local header but no  extra  field,  'l';  if  the
       reverse,  'x';  and  if  both  exist,  'X'.   Thus  the  file in this example is (probably) a text file, is not
       encrypted, and has neither an extra field nor an extended local header associated with it.  The example  below,
       on the other hand, is an encrypted binary file with an extra field:

  RWD,R,R     0.9 vms     168 Bx shrk  9-Aug-91 19:15 perms.0644

       Extra fields are used for various purposes (see discussion of the -v option below) including the storage of VMS
       file attributes, which is presumably the case here.  Note that the file attributes are listed  in  VMS  format.
       Some  other possibilities for the host operating system (which is actually a misnomer--host file system is more
       correct) include OS/2 or NT with High Performance File System (HPFS), MS-DOS, OS/2 or NT with  File  Allocation
       Table (FAT) file system, and Macintosh.  These are denoted as follows:

  -rw-a--     1.0 hpf    5358 Tl i4:3  4-Dec-91 11:33 longfilename.hpfs
  -r--ahs     1.1 fat    4096 b- i4:2 14-Jul-91 12:58 EA DATA. SF
  --w-------  1.0 mac   17357 bx i8:2  4-May-92 04:02 unzip.macr

       File  attributes in the first two cases are indicated in a Unix-like format, where the seven subfields indicate
       whether the file:  (1) is a directory, (2) is readable (always  true),  (3)  is  writable,  (4)  is  executable
       (guessed  on  the  basis of the extension--.exe, .com, .bat, .cmd and .btm files are assumed to be so), (5) has
       its archive bit set, (6) is hidden, and (7) is a system file.  Interpretation of Macintosh file  attributes  is
       unreliable because some Macintosh archivers don't store any attributes in the archive.

       Finally,  the sixth field indicates the compression method and possible sub-method used.  There are six methods
       known at present:  storing  (no  compression),  reducing,  shrinking,  imploding,  tokenizing  (never  publicly
       released),  and deflating.  In addition, there are four levels of reducing (1 through 4); four types of implod-
       ing (4K or 8K sliding dictionary, and 2 or 3 Shannon-Fano trees); and  four  levels  of  deflating  (superfast,
       fast,  normal, maximum compression).  zipinfo represents these methods and their sub-methods as follows:  stor;
       re:1, re:2, etc.; shrk; i4:2, i8:3, etc.; tokn; and defS, defF, defN, and defX.

       The medium and long listings are almost identical to the short format except that they add information  on  the
       file's  compression.   The  medium  format  lists  the file's compression factor as a percentage indicating the
       amount of space that has been ''removed'':

  -rw-rws---  1.5 unx    2802 t- 81% defX 11-Aug-91 13:48 perms.2660

       In this example, the file has been compressed by more than a factor of five; the compressed data are  only  19%
       of the original size.  The long format gives the compressed file's size in bytes, instead:

  -rw-rws---  1.5 unx    2802 t-     538 defX 11-Aug-91 13:48 perms.2660

       In  contrast to the unzip listings, the compressed size figures in this listing format denote the complete size
       of compressed data, including the 12 extra header bytes in case of encrypted entries.

       Adding the -T option changes the file date and time to decimal format:

  -rw-rws---  1.5 unx    2802 t-     538 defX 910811.134804 perms.2660

       Note that because of limitations in the MS-DOS format used to store file times, the  seconds  field  is  always
       rounded  to  the  nearest even second.  For Unix files this is expected to change in the next major releases of
       zip(1L) and unzip.

       In addition to individual file information, a default zipfile listing also includes header and trailer lines:

  Archive:  OS2.zip   5453 bytes   5 files
  ,,rw,       1.0 hpf     730 b- i4:3 26-Jun-92 23:40 Contents
  ,,rw,       1.0 hpf    3710 b- i4:3 26-Jun-92 23:33 makefile.os2
  ,,rw,       1.0 hpf    8753 b- i8:3 26-Jun-92 15:29 os2unzip.c
  ,,rw,       1.0 hpf      98 b- stor 21-Aug-91 15:34 unzip.def
  ,,rw,       1.0 hpf      95 b- stor 21-Aug-91 17:51 zipinfo.def
  5 files, 13386 bytes uncompressed, 4951 bytes compressed:  63.0%

       The header line gives the name of the archive, its total size, and the total number of files; the trailer gives
       the  number  of files listed, their total uncompressed size, and their total compressed size (not including any
       of zip's internal overhead).  If, however, one or more file(s) are provided, the header and trailer  lines  are
       not  listed.  This behavior is also similar to that of Unix's ''ls -l''; it may be overridden by specifying the
       -h and -t options explicitly.  In such a case the listing format must also be specified explicitly, since -h or
       -t  (or both) in the absence of other options implies that ONLY the header or trailer line (or both) is listed.
       See the EXAMPLES section below for a semi-intelligible translation of this nonsense.

       The verbose listing is mostly self-explanatory.  It also lists file comments and the zipfile comment,  if  any,
       and  the  type  and  number of bytes in any stored extra fields.  Currently known types of extra fields include
       PKWARE's authentication (''AV'') info; OS/2 extended attributes; VMS filesystem info, both PKWARE and  Info-ZIP
       versions;  Macintosh  resource forks; Acorn/Archimedes SparkFS info; and so on.  (Note that in the case of OS/2
       extended attributes--perhaps the most common use of zipfile  extra  fields--the  size  of  the  stored  EAs  as
       reported  by  zipinfo  may  not match the number given by OS/2's dir command: OS/2 always reports the number of
       bytes required in 16-bit format, whereas zipinfo always reports the 32-bit storage.)

       Again, the compressed size figures of the individual entries include the 12 extra header  bytes  for  encrypted
       entries.  In contrast, the archive total compressed size and the average compression ratio shown in the summary
       bottom line are calculated without the extra 12 header bytes of encrypted entries.

ENVIRONMENT OPTIONS
       Modifying zipinfo's default behavior via options placed in an environment variable can be a bit complicated  to
       explain, due to zipinfo's attempts to handle various defaults in an intuitive, yet Unix-like, manner.  (Try not
       to laugh.)  Nevertheless, there is some underlying logic.  In brief, there are  three  ''priority  levels''  of
       options:   the  default  options;  environment options, which can override or add to the defaults; and explicit
       options given by the user, which can override or add to either of the above.

       The default listing format, as noted above, corresponds roughly to the  "zipinfo  -hst"  command  (except  when
       individual zipfile members are specified).  A user who prefers the long-listing format (-l) can make use of the
       zipinfo's environment variable to change this default:

       Unix Bourne shell:
              ZIPINFO=-l; export ZIPINFO

       Unix C shell:
              setenv ZIPINFO -l

       OS/2 or MS-DOS:
              set ZIPINFO=-l

       VMS (quotes for lowercase):
              define ZIPINFO_OPTS "-l"

       If, in addition, the user dislikes the trailer line, zipinfo's concept of ''negative options'' may be  used  to
       override the default inclusion of the line.  This is accomplished by preceding the undesired option with one or
       more minuses:  e.g., ''-l-t'' or ''--tl'', in this example.  The first hyphen is the regular switch  character,
       but  the  one before the 't' is a minus sign.  The dual use of hyphens may seem a little awkward, but it's rea-
       sonably intuitive nonetheless:  simply ignore the first hyphen and go from there.  It is also  consistent  with
       the behavior of the Unix command nice(1).

       As  suggested above, the default variable names are ZIPINFO_OPTS for VMS (where the symbol used to install zip-
       info as a foreign command would otherwise be confused with the environment variable), and ZIPINFO for all other
       operating  systems.   For compatibility with zip(1L), ZIPINFOOPT is also accepted (don't ask).  If both ZIPINFO
       and ZIPINFOOPT are defined, however, ZIPINFO takes precedence.  unzip's diagnostic option (-v with  no  zipfile
       name) can be used to check the values of all four possible unzip and zipinfo environment variables.

EXAMPLES
       To  get  a  basic, short-format listing of the complete contents of a ZIP archive storage.zip, with both header
       and totals lines, use only the archive name as an argument to zipinfo:

           zipinfo storage

       To produce a basic, long-format listing (not verbose), including header and totals lines, use -l:

           zipinfo -l storage

       To list the complete contents of the archive without header and totals lines,  either  negate  the  -h  and  -t
       options or else specify the contents explicitly:

           zipinfo --h-t storage
           zipinfo storage \*

       (where  the  backslash  is  required only if the shell would otherwise expand the '*' wildcard, as in Unix when
       globbing is turned on--double quotes around the asterisk would have worked as well).  To turn  off  the  totals
       line by default, use the environment variable (C shell is assumed here):

           setenv ZIPINFO --t
           zipinfo storage

       To get the full, short-format listing of the first example again, given that the environment variable is set as
       in the previous example, it is necessary to specify the -s option explicitly, since the  -t  option  by  itself
       implies that ONLY the footer line is to be printed:

           setenv ZIPINFO --t
           zipinfo -t storage            [only totals line]
           zipinfo -st storage           [full listing]

       The  -s option, like -m and -l, includes headers and footers by default, unless otherwise specified.  Since the
       environment variable specified no footers and that has a higher precedence than the default behavior of -s,  an
       explicit -t option was necessary to produce the full listing.  Nothing was indicated about the header, however,
       so the -s option was sufficient.  Note that both the -h and -t options, when used by themselves  or  with  each
       other,  override any default listing of member files; only the header and/or footer are printed.  This behavior
       is useful when zipinfo is used with a wildcard zipfile specification; the contents of  all  zipfiles  are  then
       summarized with a single command.

       To list information on a single file within the archive, in medium format, specify the filename explicitly:

           zipinfo -m storage unshrink.c

       The  specification  of  any member file, as in this example, will override the default header and totals lines;
       only the single line of information about the requested file will be printed.  This  is  intuitively  what  one
       would  expect  when requesting information about a single file.  For multiple files, it is often useful to know
       the total compressed and uncompressed size; in such cases -t may be specified explicitly:

           zipinfo -mt storage "*.[ch]" Mak\*

       To get maximal information about the ZIP archive, use the verbose option.  It is usually wise to pipe the  out-
       put into a filter such as Unix more(1) if the operating system allows it:

           zipinfo -v storage | more

       Finally,  to  see  the  most  recently  modified files in the archive, use the -T option in conjunction with an
       external sorting utility such as Unix sort(1) (and sed(1) as well, in this example):

           zipinfo -T storage | sort -nr -k 7 | sed 15q

       The -nr option to sort(1) tells it to sort numerically in reverse order rather than in textual order,  and  the
       -k 7  option tells it to sort on the seventh field.  This assumes the default short-listing format; if -m or -l
       is used, the proper sort(1) option would be -k 8.  Older versions of sort(1) do not support the -k option,  but
       you can use the traditional + option instead, e.g., +6 instead of -k 7.  The sed(1) command filters out all but
       the first 15 lines of the listing.  Future releases of zipinfo may incorporate date/time and  filename  sorting
       as built-in options.

TIPS
       The  author  finds  it convenient to define an alias ii for zipinfo on systems that allow aliases (or, on other
       systems, copy/rename the executable, create a link or create a command file with the name ii).   The  ii  usage
       parallels the common ll alias for long listings in Unix, and the similarity between the outputs of the two com-
       mands was intentional.

BUGS
       As with unzip, zipinfo's -M (''more'') option is overly simplistic in its handling of screen output;  as  noted
       above, it fails to detect the wrapping of long lines and may thereby cause lines at the top of the screen to be
       scrolled off before being read.  zipinfo should detect and treat each occurrence of line-wrap as one additional
       line  printed.   This  requires  knowledge  of  the screen's width as well as its height.  In addition, zipinfo
       should detect the true screen geometry on all systems.

       zipinfo's listing-format behavior is unnecessarily complex and should be simplified.  (This is not to say  that
       it will be.)


SEE ALSO
       ls(1), funzip(1L), unzip(1L), unzipsfx(1L), zip(1L), zipcloak(1L), zipnote(1L), zipsplit(1L)

URL
       The Info-ZIP home page is currently at
           http://www.info-zip.org/pub/infozip/
       or
           ftp://ftp.info-zip.org/pub/infozip/ .

AUTHOR
       Greg  ''Cave  Newt''  Roelofs.   ZipInfo contains pattern-matching code by Mark Adler and fixes/improvements by
       many others.  Please refer to the CONTRIBS file in the UnZip source distribution for a more complete list.



Info-ZIP                     20 April 2009 (v3.0)                  ZIPINFO(1L)