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I know I can use unzip -l file.zip to view the file list of a zip file.

But a got a zip file inside another zip file. I tried unzip -l file.zip/sub_file.zip, but failed.

Is it possible to view the file list of the sub_file.zip without extract it out?

Zen
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3 Answers3

2

You can use less with Wolfgang Friebel's lesspipe script: less file.zip:sub_file.zip

vinc17
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  • Is this `:` symbol used to refer to zip file relationship only, or have other usages? – Zen Aug 18 '14 at 02:56
  • I got this: `zipinfo: cannot find or open 2014-08-16.zip:info_2014-08-16.zip, 2014-08-16.zip:info_2014-08-16.zip.zip or 2014-08-16.zip:info_2014-08-16.zip.ZIP` – Zen Aug 18 '14 at 02:58
  • But I have this info_2014-08-16.zip file in the 2014-08-16.zip file. `[admin@cjxx-s1 platform]$ unzip -l 2014-08-16.zip Archive: 2014-08-16.zip Length Date Time Name --------- ---------- ----- ---- 3145521 08-17-2014 00:47 info_2014-08-16.zip 1047822 08-17-2014 00:47 pay_2014-08-16.zip 46524282 08-17-2014 00:48 spend_2014-08-16.zip` – Zen Aug 18 '14 at 02:59
  • @Zen `:` is used to accede files in archives supported by `lesspipe`, recursively. If you get such errors, it seems that you are not using Wolfgang Friebel's `lesspipe`. – vinc17 Aug 18 '14 at 02:59
  • got it, it means I need to install a `lesspipe` program first, right? But that's not a good universal solution, I think. – Zen Aug 18 '14 at 03:03
  • @Zen `lesspipe` is so useful that it should be universal. I can't live without it: used with `less` (for which it has been written), it's the universal viewer in a text terminal. – vinc17 Aug 18 '14 at 03:06
  • I'm confused, `less` is an inside build program on Ubuntu, I can use it without installing anything, but is this `less` command the same thing with `lesspipe`? If they are the same thing, why my `less file.zip:sub_file.zip` doesn't work? – Zen Aug 18 '14 at 03:21
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    @Zen This is the same `less`: `lesspipe` is an input preprocessor, used with the `LESSOPEN` environment variable, e.g. `export LESSOPEN="|/path/to/lesspipe %s"`. See the `less(1)` man page for more information. – vinc17 Aug 18 '14 at 08:44
  • I was in the middle of writing an answer here, but... does this work *recursively*? I guess it just creates as many temp files as it needs? I like this - I have `lesspipe` but I am not sure about Wolfgang... I need to check. In the meantime, screw my answer. – mikeserv Aug 19 '14 at 00:28
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    @mikeserv The [README](http://www-zeuthen.desy.de/~friebel/unix/less/README) file says that file extraction works up to a depth of 6. I suppose that this is sufficient in practice! Note that this also works with compressed files (`.gz`, etc.), with `.deb` files, and so on. Internally temp files (or pipes) are used, but this is transparent. If the `lesspipe` script doesn't contain the text "Wolfgang Friebel", you don't have the right one. – vinc17 Aug 19 '14 at 00:41
2

unzip -l file.zip/sub_file.zip doesn't work because file.zip isn't a directory: it's a regular file that happens to be in an archive format. But you can create a directory that mirrors the content of the zip file, by mounting a filesystem that presents a view of the content of the zip file. There are several choices, pick whichever is easiest to install on your distribution:

For example, with archivemount:

mkdir file.d
archivemount file.zip file.d
unzip -l file.d/sub_file.zip
fusermount -u file.d

or even

mkdir file.d sub_file.d
archivemount file.zip file.d
archivemount file.d/sub_file.zip sub_file.d
ls -lR sub_file.d
fusermount -u sub_file.d
fusermount -u file.d

See Extract only a specific file from a zipped archive to a given directory, How do I recursively grep through compressed archives? and Search for files with a specific size inside recursive zipped archives for examples of AVFS and fuse-zip in similar situations.

Community
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Gilles 'SO- stop being evil'
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1

With zsh:

$ unzip -l a.zip.zip
Archive:  a.zip.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
      195  2014-08-18 09:38   a.zip
---------                     -------
      195                     1 file

$ unzip -l =(unzip -p a.zip.zip a.zip)
Archive:  /tmp/zsh0i0JyZ
  Length      Date    Time    Name
---------  ---------- -----   ----
       55  2014-08-15 15:24   a
---------                     -------
       55                     1 file

=(...) is a third form of process substitution that uses a temporary file instead of a pipe (unzip only works with seekable files).

Stéphane Chazelas
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