Provided by: unzip_6.0-4ubuntu1_i386 bug

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 character, a  hyphen,
                     and  an  ending  character.  If an exclamation point or a
                     caret (`!' or `^') follows 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  comments  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 compression 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 screenful 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 capability.  Also, zipinfo  doesn't
              notice if long lines wrap at the edge of the screen, effectively
              resulting  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 compressed 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 uncompressed 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 imploding (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(1) 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 reasonably 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 zipinfo as a foreign command would
       otherwise be confused with the environment variable), and  ZIPINFO  for
       all other operating systems.  For compatibility with zip(1), 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 output 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  commands 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(1),   unzip(1),   unzipsfx(1),   zip(1),   zipcloak(1),
       zipnote(1), zipsplit(1)

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.