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324 lines
11 KiB
Markdown
324 lines
11 KiB
Markdown
[#]: collector: (lujun9972)
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[#]: translator: (wxy)
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[#]: reviewer: (wxy)
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[#]: publisher: (wxy)
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[#]: url: (https://linux.cn/article-11913-1.html)
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[#]: subject: (Zipping files on Linux: the many variations and how to use them)
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[#]: via: (https://www.networkworld.com/article/3333640/linux/zipping-files-on-linux-the-many-variations-and-how-to-use-them.html)
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[#]: author: (Sandra Henry-Stocker https://www.networkworld.com/author/Sandra-Henry_Stocker/)
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在 Linux 上压缩文件:zip 命令的各种变体及用法
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======
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> 除了压缩和解压缩文件外,你还可以使用 zip 命令执行许多有趣的操作。这是一些其他的 zip 选项以及它们如何提供帮助。
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![](https://img.linux.net.cn/data/attachment/album/202002/21/120507ox11ak23f9x2hxaq.jpg)
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为了节省一些磁盘空间并将文件打包在一起进行归档,我们中的一些人已经在 Unix 和 Linux 系统上压缩文件数十年了。即使这样,并不是所有人都尝试过一些有趣的压缩工具的变体。因此,在本文中,我们将介绍标准的压缩和解压缩以及其他一些有趣的压缩选项。
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### 基本的 zip 命令
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首先,让我们看一下基本的 `zip` 命令。它使用了与 `gzip` 基本上相同的压缩算法,但是有一些重要的区别。一方面,`gzip` 命令仅用于压缩单个文件,而 `zip` 既可以压缩文件,也可以将多个文件结合在一起成为归档文件。另外,`gzip` 命令是“就地”压缩。换句话说,它会只留下一个压缩文件,而原始文件则没有了。 这是工作中的 `gzip` 示例:
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```
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$ gzip onefile
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$ ls -l
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-rw-rw-r-- 1 shs shs 10514 Jan 15 13:13 onefile.gz
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```
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而下面是 `zip`。请注意,此命令要求为压缩存档提供名称,其中 `gzip`(执行压缩操作后)仅使用原始文件名并添加 `.gz` 扩展名。
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```
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$ zip twofiles.zip file*
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adding: file1 (deflated 82%)
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adding: file2 (deflated 82%)
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$ ls -l
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-rw-rw-r-- 1 shs shs 58021 Jan 15 13:25 file1
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-rw-rw-r-- 1 shs shs 58933 Jan 15 13:34 file2
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-rw-rw-r-- 1 shs shs 21289 Jan 15 13:35 twofiles.zip
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```
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请注意,原始文件仍位于原处。
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所节省的磁盘空间量(即获得的压缩程度)将取决于每个文件的内容。以下示例中的变化很大。
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```
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$ zip mybin.zip ~/bin/*
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adding: bin/1 (deflated 26%)
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adding: bin/append (deflated 64%)
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adding: bin/BoD_meeting (deflated 18%)
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adding: bin/cpuhog1 (deflated 14%)
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adding: bin/cpuhog2 (stored 0%)
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adding: bin/ff (deflated 32%)
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adding: bin/file.0 (deflated 1%)
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adding: bin/loop (deflated 14%)
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adding: bin/notes (deflated 23%)
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adding: bin/patterns (stored 0%)
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adding: bin/runme (stored 0%)
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adding: bin/tryme (deflated 13%)
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adding: bin/tt (deflated 6%)
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```
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### unzip 命令
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`unzip` 命令将从一个 zip 文件中恢复内容,并且,如你所料,原来的 zip 文件还保留在那里,而类似的 `gunzip` 命令将仅保留未压缩的文件。
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```
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$ unzip twofiles.zip
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Archive: twofiles.zip
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inflating: file1
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inflating: file2
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$ ls -l
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-rw-rw-r-- 1 shs shs 58021 Jan 15 13:25 file1
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-rw-rw-r-- 1 shs shs 58933 Jan 15 13:34 file2
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-rw-rw-r-- 1 shs shs 21289 Jan 15 13:35 twofiles.zip
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```
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### zipcloak 命令
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`zipcloak` 命令对一个 zip 文件进行加密,提示你输入两次密码(以确保你不会“胖手指”),然后将该文件原位存储。你可以想到,文件大小与原始文件会有所不同。
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```
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$ zipcloak twofiles.zip
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Enter password:
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Verify password:
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encrypting: file1
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encrypting: file2
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$ ls -l
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total 204
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-rw-rw-r-- 1 shs shs 58021 Jan 15 13:25 file1
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-rw-rw-r-- 1 shs shs 58933 Jan 15 13:34 file2
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-rw-rw-r-- 1 shs shs 21313 Jan 15 13:46 twofiles.zip <== slightly larger than
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unencrypted version
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```
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请记住,压缩包之外的原始文件仍处于未加密状态。
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### zipdetails 命令
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`zipdetails` 命令将向你显示详细信息:有关压缩文件的详细信息,可能比你想象的要多得多。即使我们正在查看一个加密的文件,`zipdetails` 也会显示文件名以及文件修改日期、用户和组信息、文件长度数据等。请记住,这都是“元数据”。我们看不到文件的内容。
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```
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$ zipdetails twofiles.zip
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0000 LOCAL HEADER #1 04034B50
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0004 Extract Zip Spec 14 '2.0'
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0005 Extract OS 00 'MS-DOS'
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0006 General Purpose Flag 0001
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[Bit 0] 1 'Encryption'
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[Bits 1-2] 1 'Maximum Compression'
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0008 Compression Method 0008 'Deflated'
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000A Last Mod Time 4E2F6B24 'Tue Jan 15 13:25:08 2019'
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000E CRC F1B115BD
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0012 Compressed Length 00002904
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0016 Uncompressed Length 0000E2A5
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001A Filename Length 0005
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001C Extra Length 001C
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001E Filename 'file1'
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0023 Extra ID #0001 5455 'UT: Extended Timestamp'
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0025 Length 0009
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0027 Flags '03 mod access'
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0028 Mod Time 5C3E2584 'Tue Jan 15 13:25:08 2019'
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002C Access Time 5C3E27BB 'Tue Jan 15 13:34:35 2019'
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0030 Extra ID #0002 7875 'ux: Unix Extra Type 3'
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0032 Length 000B
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0034 Version 01
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0035 UID Size 04
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0036 UID 000003E8
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003A GID Size 04
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003B GID 000003E8
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003F PAYLOAD
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2943 LOCAL HEADER #2 04034B50
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2947 Extract Zip Spec 14 '2.0'
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2948 Extract OS 00 'MS-DOS'
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2949 General Purpose Flag 0001
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[Bit 0] 1 'Encryption'
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[Bits 1-2] 1 'Maximum Compression'
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294B Compression Method 0008 'Deflated'
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294D Last Mod Time 4E2F6C56 'Tue Jan 15 13:34:44 2019'
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2951 CRC EC214569
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2955 Compressed Length 00002913
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2959 Uncompressed Length 0000E635
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295D Filename Length 0005
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295F Extra Length 001C
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2961 Filename 'file2'
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2966 Extra ID #0001 5455 'UT: Extended Timestamp'
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2968 Length 0009
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296A Flags '03 mod access'
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296B Mod Time 5C3E27C4 'Tue Jan 15 13:34:44 2019'
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296F Access Time 5C3E27BD 'Tue Jan 15 13:34:37 2019'
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2973 Extra ID #0002 7875 'ux: Unix Extra Type 3'
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2975 Length 000B
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2977 Version 01
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2978 UID Size 04
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2979 UID 000003E8
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297D GID Size 04
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297E GID 000003E8
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2982 PAYLOAD
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5295 CENTRAL HEADER #1 02014B50
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5299 Created Zip Spec 1E '3.0'
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529A Created OS 03 'Unix'
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529B Extract Zip Spec 14 '2.0'
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529C Extract OS 00 'MS-DOS'
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529D General Purpose Flag 0001
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[Bit 0] 1 'Encryption'
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[Bits 1-2] 1 'Maximum Compression'
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529F Compression Method 0008 'Deflated'
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52A1 Last Mod Time 4E2F6B24 'Tue Jan 15 13:25:08 2019'
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52A5 CRC F1B115BD
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52A9 Compressed Length 00002904
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52AD Uncompressed Length 0000E2A5
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52B1 Filename Length 0005
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52B3 Extra Length 0018
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52B5 Comment Length 0000
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52B7 Disk Start 0000
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52B9 Int File Attributes 0001
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[Bit 0] 1 Text Data
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52BB Ext File Attributes 81B40000
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52BF Local Header Offset 00000000
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52C3 Filename 'file1'
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52C8 Extra ID #0001 5455 'UT: Extended Timestamp'
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52CA Length 0005
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52CC Flags '03 mod access'
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52CD Mod Time 5C3E2584 'Tue Jan 15 13:25:08 2019'
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52D1 Extra ID #0002 7875 'ux: Unix Extra Type 3'
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52D3 Length 000B
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52D5 Version 01
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52D6 UID Size 04
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52D7 UID 000003E8
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52DB GID Size 04
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52DC GID 000003E8
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52E0 CENTRAL HEADER #2 02014B50
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52E4 Created Zip Spec 1E '3.0'
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52E5 Created OS 03 'Unix'
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52E6 Extract Zip Spec 14 '2.0'
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52E7 Extract OS 00 'MS-DOS'
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52E8 General Purpose Flag 0001
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[Bit 0] 1 'Encryption'
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[Bits 1-2] 1 'Maximum Compression'
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52EA Compression Method 0008 'Deflated'
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52EC Last Mod Time 4E2F6C56 'Tue Jan 15 13:34:44 2019'
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52F0 CRC EC214569
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52F4 Compressed Length 00002913
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52F8 Uncompressed Length 0000E635
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52FC Filename Length 0005
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52FE Extra Length 0018
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5300 Comment Length 0000
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5302 Disk Start 0000
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5304 Int File Attributes 0001
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[Bit 0] 1 Text Data
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5306 Ext File Attributes 81B40000
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530A Local Header Offset 00002943
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530E Filename 'file2'
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5313 Extra ID #0001 5455 'UT: Extended Timestamp'
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5315 Length 0005
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5317 Flags '03 mod access'
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5318 Mod Time 5C3E27C4 'Tue Jan 15 13:34:44 2019'
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531C Extra ID #0002 7875 'ux: Unix Extra Type 3'
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531E Length 000B
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5320 Version 01
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5321 UID Size 04
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5322 UID 000003E8
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5326 GID Size 04
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5327 GID 000003E8
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532B END CENTRAL HEADER 06054B50
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532F Number of this disk 0000
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5331 Central Dir Disk no 0000
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5333 Entries in this disk 0002
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5335 Total Entries 0002
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5337 Size of Central Dir 00000096
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533B Offset to Central Dir 00005295
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533F Comment Length 0000
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Done
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```
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### zipgrep命令
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`zipgrep` 命令将使用 `grep` 类的功能来找到压缩文件中的特定内容。如果文件已加密,则需要为要检查的每个文件输入为加密所提供的密码。如果只想检查归档文件中单个文件的内容,请将其名称添加到 `zipgrep` 命令的末尾,如下所示。
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```
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$ zipgrep hazard twofiles.zip file1
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[twofiles.zip] file1 password:
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Certain pesticides should be banned since they are hazardous to the environment.
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```
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### zipinfo 命令
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`zipinfo` 命令提供有关压缩文件内容的信息,无论是否加密。这包括文件名、大小、日期和权限。
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```
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$ zipinfo twofiles.zip
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Archive: twofiles.zip
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Zip file size: 21313 bytes, number of entries: 2
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-rw-rw-r-- 3.0 unx 58021 Tx defN 19-Jan-15 13:25 file1
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-rw-rw-r-- 3.0 unx 58933 Tx defN 19-Jan-15 13:34 file2
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2 files, 116954 bytes uncompressed, 20991 bytes compressed: 82.1%
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```
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### zipnote 命令
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`zipnote` 命令可用于从 zip 归档中提取注释或添加注释。要显示注释,只需在命令前面加上归档名称即可。如果之前未添加任何注释,你将看到类似以下内容:
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```
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$ zipnote twofiles.zip
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@ file1
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@ (comment above this line)
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@ file2
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@ (comment above this line)
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@ (zip file comment below this line)
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```
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如果要添加注释,请先将 `zipnote` 命令的输出写入到文件:
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```
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$ zipnote twofiles.zip > comments
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```
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接下来,编辑你刚刚创建的文件,将注释插入到 `(comment above this line)` 行上方。然后使用像这样的 `zipnote` 命令添加注释:
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```
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$ zipnote -w twofiles.zip < comments
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```
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### zipsplit 命令
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当归档文件太大时,可以使用 `zipsplit` 命令将一个 zip 归档文件分解为多个 zip 归档文件,这样你就可以将其中某一个文件放到小型 U 盘中。最简单的方法似乎是为每个部分的压缩文件指定最大大小,此大小必须足够大以容纳最大的所包含的文件。
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```
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$ zipsplit -n 12000 twofiles.zip
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2 zip files will be made (100% efficiency)
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creating: twofile1.zip
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creating: twofile2.zip
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$ ls twofile*.zip
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-rw-rw-r-- 1 shs shs 10697 Jan 15 14:52 twofile1.zip
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-rw-rw-r-- 1 shs shs 10702 Jan 15 14:52 twofile2.zip
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-rw-rw-r-- 1 shs shs 21377 Jan 15 14:27 twofiles.zip
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```
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请注意,提取的文件是如何依次命名为 `twofile1` 和 `twofile2` 的。
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### 总结
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`zip` 命令及其一些压缩工具变体,对如何生成和使用压缩文件归档提供了很多控制。
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--------------------------------------------------------------------------------
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via: https://www.networkworld.com/article/3333640/linux/zipping-files-on-linux-the-many-variations-and-how-to-use-them.html
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作者:[Sandra Henry-Stocker][a]
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选题:[lujun9972][b]
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译者:[wxy](https://github.com/wxy)
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校对:[wxy](https://github.com/wxy)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译,[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.networkworld.com/author/Sandra-Henry_Stocker/
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[b]: https://github.com/lujun9972
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[1]: https://www.networkworld.com/article/3242170/linux/invaluable-tips-and-tricks-for-troubleshooting-linux.html
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[2]: https://www.facebook.com/NetworkWorld/
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[3]: https://www.linkedin.com/company/network-world
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