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. 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. 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.
標題行提供存檔的名稱、總大小和文件總數;預告片提供列出的文件數、它們的總未壓縮大小及其總壓縮大小（不包括任何 zip 的內部開銷）。但是，如果提供了一個或多個文件，則不會列出標題行和尾部行。這種行為也類似于Unix的"ls-l";可以通過顯式指定-h和-t 選項來覆蓋它。在這種情況下，還必須顯式指定列表格式，因為在沒有其他選項的情況下，-h或-t（或兩者）意味著僅列出標題或尾部行（或兩者）。
冗長的清單大多不言自明。它還列出文件注釋和 zipfile 注釋（如果有）以及任何存儲的額外字段中的字節類型和數量。目前已知的額外字段類型包括 PKWARE 的身份驗證 （"AV"） 信息;OS/2 擴展屬性;VMS 文件系統信息，包括 PKWARE 和信息 ZIP 版本;麥金托什資源叉;橡子/阿基米德火花信息;等等。（請注意，在 OS/2 擴展屬性（可能是 zipfile 額外字段的最常見用途）;zipinfo 報告的存儲 EA 的大小可能與 OS/2 的 dir 命令給出的數字不匹配：OS/2 始終以16 位格式報告所需的字節數，而 zipinfo 始終報告32 位存儲。
The zipinfo command takes the following 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 file name can be a wildcard; the path itself cannot. Wildcard expressions are similar to Unix egrepregular 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 file name; 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 .exesuffix (if any) explicitly.
file ...
An optional list of archive members to be processed, separated by spaces. Regular expressions or 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.
-xxfile ...
An optional list of archive members to be excluded from processing.
Options
-1
List file names only, one per line. This option excludes all others; headers, trailers and zipfile comments are never printed. It is intended for use in Unix shellscripts.
-2
List file names 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 file names are particularly long.
-s
List zipfile info in short Unix "ls -l" format. This is the default behavior.
-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 more 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 spacebar. zipinfo can be terminated by pressing the q key and, on some systems, the Enter/Return key. Unlike more, 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.
-U
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 file names as "#Uxxxx". This option is mainly provided for debugging purpose when the fairly new UTF-8 support is suspected to mangle up extracted file names.
The option -UU allows to entirely disable the recognition of UTF-8 encoded file names. The handling of file name codings within unzip falls back to the behaviour of previous versions.
-z
Include the archive comment (if any) in the listing.
Technical Details
zipinfo has a number of modes, and its behavior can be rather difficult to fathom if one isn't familiar with Unix ls. The default behavior is to list files in the following format:
The last three fields are the modification date and time of the file, and its name. The case of the file name 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 file name.
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. 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 or an "extra field" associated with the file (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:
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. These 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:
is a directory,
is readable (always true),
is writable,
is executable (guessed on the basis of the extension; .exe, .com, .bat, .cmd and .btm files are assumed to be so),
has its archive bit set,
is hidden, and
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. Also, 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 (super fast, 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":
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:
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:
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 and unzip.
In addition to individual file information, a default zipfile listing also includes header and trailer lines:
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.
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. 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 using the following methods:
in Unix Bourne shell:
ZIPINFO=-l; export ZIPINFO
in Unix C shell:
setenv ZIPINFO -l
in OS/2 or MS-DOS:
set ZIPINFO=-l
in 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: ignore the first hyphen and go from there. It is also consistent with the behavior of the Unix command nice.
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, ZIPINFOOPT is also accepted. 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.
zipinfo (列出了有關ZIP存檔的技術信息)
在像Unix一樣操作系統上，zipinfo命令列出了有關ZIP存檔的技術信息。
On Unix-like operating systems, the zipinfo command lists technical information about a ZIP archive.
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1 zipinfo 運行系統環境
2 zipinfo 描述
3 zipinfo 語法
4 zipinfo 例子
zipinfo 運行系統環境
Unix&Linux
zipinfo 描述
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zipinfo 語法
參數
zipinfo命令采用以下參數：
選項
-UU允許完全禁用 UTF-8 編碼文件名的
識別。在解壓縮中處理文件名編碼可追溯到以前版本的行為。
技術細節
zipinfo有許多模式，如果不熟悉Unix ls，它的行為可能相當難以理解。默認行為是以以下格式列出文件：
最后三個字段是文件的修改日期和時間及其名稱。文件名的大小寫得到尊重;因此，來自 MS-DOS PKZIP 的文件始終大寫。如果文件使用存儲的目錄名壓縮，則該文件也將顯示為文件名的一部分。
第二個和第三個字段表示文件在 Unix 下壓縮了 zip的版本 1.9 。由于它來自 Unix，因此行開頭的文件權限以 Unix 格式打印。未壓縮的文件大小（本例中為 2802）是第四個字段。第五個字段由兩個字符組成，其中一個可以包含多個值。第一個字符可以是[t]或[b]，表示zip認為文件分別是文本或二進制文件。如果文件已加密，zipinfo會通過大寫字符（"T"或"B"）來記錄這一事實。第二個字符還可以包含四個值，具體取決于是否有擴展的本地標頭或與文件關聯的"額外字段"（它們提供了在存檔中包含非標準信息的標準方法）。如果兩者都不存在，則字符將是連字符 （"-"）;如果有一個擴展的本地標頭，但沒有額外的字段，"l";如果相反，[x];如果兩者都存在，[X]。因此，此示例中的文件（可能）是文本文件，未加密，并且既沒有額外的字段，也沒有與之關聯的擴展本地標頭。另一方面，下面的示例是一個加密的二進制文件，具有額外的字段：
額外的字段用于各種目的（請參閱下面的-v選項的討論），包括 VMS 文件屬性的存儲，這里大概就是這種情況。這些文件屬性以 VMS 格式列出。主機操作系統的一些其他可能性（這實際上是一個用詞不當的主機文件系統更正確）包括OS/2或NT與高性能文件系統（HPFS），MS-DOS，OS/2或NT文件分配表（FAT）文件系統，和Macintosh。 這些表示如下：
前兩種情況下的文件屬性以一種與 Unix 一樣表示的格式，其中七個子字段指示文件是否：
最后，第六個字段指示壓縮方法和可能的子方法。目前有六種已知方法：存儲（無壓縮）、減少、收縮、內爆、標記化（從未公開發布）和放氣。此外，有四個級別的減少（1到4）;四種類型的內爆（4K或8K滑動字典，和2或3香農-法諾樹）;和四個級別的放氣（超快，快，正常，最大壓縮）。zipinfo表示這些方法及其子方法如下： stor;re：1、re：2 等;shrk;i4：2，i8：3 等;tokn;和 defs， deff， defn 和 defx 。
中長列表幾乎與短格式相同，只是它們增加了有關文件壓縮的信息。中等格式將文件的壓縮系數列出為指示已"刪除"的空間量的百分比：
在此示例中，文件壓縮了五分之一多;壓縮數據只有原始大小的 19%。長格式以字節為單位提供壓縮文件的大小，而不是：
與解壓縮列表不同，此列表格式中的壓縮大小表示壓縮數據的完整大小，包括加密條目的 12 個額外的標頭字節。
添加-T 選項會將文件日期和時間更改為十進制格式：
請注意，由于用于存儲文件時間的 MS-DOS 格式的限制，秒字段始終四舍五入到最接近的甚至秒。對于 Unix 文件，這預計將改變在 zip 和解壓縮的下一個主要版本。
除了單個文件信息外，默認 zipfile 列表還包括標題行和尾部行：
標題行提供存檔的名稱、總大小和文件總數;預告片提供列出的文件數、它們的總未壓縮大小及其總壓縮大小（不包括任何 zip 的內部開銷）。但是，如果提供了一個或多個文件，則不會列出標題行和尾部行。這種行為也類似于Unix的"ls-l";可以通過顯式指定-h和-t 選項來覆蓋它。在這種情況下，還必須顯式指定列表格式，因為在沒有其他選項的情況下，-h或-t（或兩者）意味著僅列出標題或尾部行（或兩者）。
冗長的清單大多不言自明。它還列出文件注釋和 zipfile 注釋（如果有）以及任何存儲的額外字段中的字節類型和數量。目前已知的額外字段類型包括 PKWARE 的身份驗證 （"AV"） 信息;OS/2 擴展屬性;VMS 文件系統信息，包括 PKWARE 和信息 ZIP 版本;麥金托什資源叉;橡子/阿基米德火花信息;等等。（請注意，在 OS/2 擴展屬性（可能是 zipfile 額外字段的最常見用途）;zipinfo 報告的存儲 EA 的大小可能與 OS/2 的 dir 命令給出的數字不匹配：OS/2 始終以16 位格式報告所需的字節數，而 zipinfo 始終報告32 位存儲。
同樣，各個條目的壓縮大小數字包括加密條目的 12 個額外的頭字節。相比之下，在計算未額外 12 個頭字節的加密條目的情況下，計算摘要底線中顯示的存檔總壓縮大小和平均壓縮比。
環境選項
通過放置在環境變量中的選項修改zipinfo的默認行為可能有點復雜，因為 zipinfo嘗試以直觀但與 Unix 一樣的方式處理各種默認值。然而，有一些基本的邏輯。簡言之，選項有三個"優先級"：默認選項;默認選項。默認選項，默認環境選項，可以覆蓋或添加到默認值;和用戶給出的顯式選項，這些選項可以覆蓋或添加到上述任一選項中。
如上所述，默認列表格式大致對應于"zipinfo -hst"命令（指定了單獨的 zipfile 成員時除外）。喜歡長列表格式 （-l） 的用戶可以使用 zipinfo 的環境變量使用以下方法更改此默認值：
在 Unix伯恩殼：
在 Unix C 外殼中：
在 OS/2 或 MS-DOS 中：
在 VMS 中（小寫的報價）：
此外，如果用戶不喜歡拖車行，zipinfo的"負面選項"概念可用于覆蓋該行的默認包含。這是通過前面的一個或多個減號不需要的選項來完成的：例如，在此示例中的"-l-t"或"--tl"。第一個連字符是常規開關字符，但[t]之前是一個減號。連字符的雙重用途可能看起來有點尷尬，但它還是相當直觀：忽略第一個連字符，然后從那里開始。它也與Unix命令尼斯的行為一致。
如上文所示，VMS 的默認變量名稱為 ZIPINFO_OPTS（用于將zipinfo安裝為外國命令的符號將與環境變量混淆），并且所有其他操作系統的 ZIPINFO為 ZIPINFO_OPTS。為了與 zip兼容，也接受 ZIPINFOOPT。但是，如果定義了 ZIPINFO 和 ZIPINFOOPT，則 ZIPINFO 優先。解壓縮的診斷選項（-v沒有 zipfile 名稱）可用于檢查所有四個可能的unzip和 zipinfo 環境變量的值。
Arguments
The zipinfo command takes the following arguments:
Options
The option -UU allows to entirely disable the recognition of UTF-8 encoded file names. The handling of file name codings within unzip falls back to the behaviour of previous versions.
Technical Details
zipinfo has a number of modes, and its behavior can be rather difficult to fathom if one isn't familiar with Unix ls. The default behavior is to list files in the following format:
The last three fields are the modification date and time of the file, and its name. The case of the file name 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 file name.
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. 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 or an "extra field" associated with the file (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:
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. These 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:
File attributes in the first two cases are indicated in a Unix-like format, where the seven subfields indicate whether the file:
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. Also, 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 (super fast, 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":
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:
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:
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 and unzip.
In addition to individual file information, a default zipfile listing also includes header and trailer lines:
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.
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. 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 using the following methods:
in Unix Bourne shell:
in Unix C shell:
in OS/2 or MS-DOS:
in VMS (quotes for lowercase):
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: ignore the first hyphen and go from there. It is also consistent with the behavior of the Unix command nice.
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, ZIPINFOOPT is also accepted. 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.
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zipinfo 例子
顯示有關存檔hope.zip。輸出將類似于以下內容：
Display information about the archive hope.zip. Output will resemble the following:
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其他命令行
zipsplit | zipnote | zip | zipcloak |