linux系统下文件压缩与归档

不管是普通使用linux系统，还是做为一名运维人员，掌握文件的压缩与归档都是有必要的，在linux系统上压缩与归档的工具是比较多的，今天我就带大家了解一些比较常见的压缩与归档工具。

一、compress/uncompress  默认会删除原文件
 compress [-dfvcVr] [-b maxbits] [file ...]
  -d: 解压缩，相当于uncompress
  -c: 结果输出至标准输出,不删除原文件
  -v: 显示详情
  uncompress 解压缩
  zcat 不解压缩的前提下查看文本文件内容

示例：

[root@centos7 ziptest]# compress -c locale-archive >locale-archive.Z
[root@centos7 ziptest]# ll -h
total 148M
-rw-r--r--. 1 root root 102M Aug 15 17:23 locale-archive
-rw-r--r--. 1 root root  47M Aug 15 17:26 locale-archive.Z
[root@centos7 ziptest]#

二、gzip/gunzip  默认会删除原文件
gzip [OPTION]... FILE ...
  -d: 解压缩，相当于gunzip
  -c: 将压缩或解压缩的结果输出至标准输出，不删除原文件
  -#：1-9，指定压缩比，值越大压缩比越大
  zcat：不解压缩的前提下查看文本文件内容

示例：

[root@centos7 ziptest]# gzip -c locale-archive >locale-archive
.gz[root@centos7 ziptest]# ll -h
total 171M
-rw-r--r--. 1 root root 102M Aug 15 17:23 locale-archive
-rw-r--r--. 1 root root  23M Aug 15 17:31 locale-archive.gz
-rw-r--r--. 1 root root  47M Aug 15 17:26 locale-archive.Z
[root@centos7 ziptest]#

三、bzip2/bunzip2 对于大文件有着更大的压缩比
bzip2 [OPTION]... FILE ...
  -k: keep, 保留原文件
  -d：解压缩
  -#：1-9，压缩比，默认为6
  bzcat：不解压缩的前提下查看文本文件内容

示例：

[root@centos7 ziptest]# bzip2 -k locale-archive locale-archive
.bz2bzip2: Input file locale-archive.bz2 already has .bz2 suffix.
[root@centos7 ziptest]# ll -h
total 191M
-rw-r--r--. 1 root root 102M Aug 15 17:23 locale-archive
-rw-r--r--. 1 root root  21M Aug 15 17:23 locale-archive.bz2
-rw-r--r--. 1 root root  23M Aug 15 17:31 locale-archive.gz
-rw-r--r--. 1 root root  47M Aug 15 17:26 locale-archive.Z
[root@centos7 ziptest]#

四、xz/unxz  压缩比最大
xz [OPTION]... FILE ...
  -k: keep, 保留原文件；
  -d：解压缩
  -#：1-9，压缩比，默认为6；
  xzcat: 不显式解压缩的前提下查看文本文件内容

示例：

[root@centos7 ziptest]# xz -k locale-archive locale-archive.xz
xz: locale-archive.xz: File already has `.xz‘ suffix, skipping
[root@centos7 ziptest]# ll -h
total 195M
-rw-r--r--. 1 root root 102M Aug 15 17:23 locale-archive
-rw-r--r--. 1 root root  21M Aug 15 17:23 locale-archive.bz2
-rw-r--r--. 1 root root  23M Aug 15 17:31 locale-archive.gz
-rw-r--r--. 1 root root 3.3M Aug 15 17:23 locale-archive.xz
-rw-r--r--. 1 root root  47M Aug 15 17:26 locale-archive.Z
[root@centos7 ziptest]#

由此可见各个压缩工具的的压缩性能：xz > bz2 > gz > compress

五、zip/unzip 压缩并归档（不删除原文件）
 zip -r zipname.zip file...    打包并压缩
 zip –r sysconfig.zip /etc/sysconfig  
 unzip sysconfig.zip      解包并解压缩

六、tar  只归档不压缩
 (1) 创建归档
  tar -c -f /PATH/TO/SOMEFILE.tar FILE...
  tar -cf /PATH/TO/SOMEFILE.tar FILE...
 (2) 查看归档文件中的文件列表
  tar -t -f /PATH/TO/SOMEFILE.tar
 (3) 展开归档
  tar -x -f /PATH/TO/SOMEFILE.tar
  tar -x -f /PATH/TO/SOMEFILE.tar -C /PATH/
 
 (4) 结合压缩工具实现：归档并压缩
     tar -zcf：归档并调用gzip压缩
     tar -zxf：调用gzip解压缩并展开归档

示例：

[root@centos7 tartest]# cp -r /etc/sysconfig .
[root@centos7 tartest]# ll -h
total 4.0K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig
[root@centos7 tartest]# tar -zcf sysconfig.tar.gz sysconfig
[root@centos7 tartest]# ll -h
total 112K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig
-rw-r--r--. 1 root root 105K Aug 15 20:16 sysconfig.tar.gz
[root@centos7 tartest]# mv sysconfig sysconfig2
[root@centos7 tartest]# ll -h
total 112K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig2
-rw-r--r--. 1 root root 105K Aug 15 20:16 sysconfig.tar.gz
[root@centos7 tartest]# tar -zxf sysconfig.tar.gz
[root@centos7 tartest]# ll -h
total 116K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig2
-rw-r--r--. 1 root root 105K Aug 15 20:16 sysconfig.tar.gz
[root@centos7 tartest]#

     tar -jcf：归档并调用bzip压缩
     tar -jxf：调用bzip解压缩并展开归档

示例：

[root@centos7 tartest]# ll -h
total 112K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig
-rw-r--r--. 1 root root 105K Aug 15 20:16 sysconfig.tar.gz
[root@centos7 tartest]# tar -jcf sysconfig.tar.bz2 sysconfig
[root@centos7 tartest]# ll -h
total 212K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig
-rw-r--r--. 1 root root 100K Aug 15 20:20 sysconfig.tar.bz2
-rw-r--r--. 1 root root 105K Aug 15 20:16 sysconfig.tar.gz
[root@centos7 tartest]# mv sysconfig sysconfig2
[root@centos7 tartest]# ll -h
total 212K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig2
-rw-r--r--. 1 root root 100K Aug 15 20:20 sysconfig.tar.bz2
-rw-r--r--. 1 root root 105K Aug 15 20:16 sysconfig.tar.gz
[root@centos7 tartest]# tar -jxf sysconfig.tar.bz2
[root@centos7 tartest]# ll -h
total 216K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig2
-rw-r--r--. 1 root root 100K Aug 15 20:20 sysconfig.tar.bz2
-rw-r--r--. 1 root root 105K Aug 15 20:16 sysconfig.tar.gz
[root@centos7 tartest]#

     tar -Jcf：归档并调用xz压缩
     tar -Jxf：调用xz解压缩并展开归档

示例：

[root@centos7 tartest]# ll -h
total 212K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig
-rw-r--r--. 1 root root 100K Aug 15 20:20 sysconfig.tar.bz2
-rw-r--r--. 1 root root 105K Aug 15 20:16 sysconfig.tar.gz
[root@centos7 tartest]# tar -Jcf sysconfig.tar.xz sysconfig
[root@centos7 tartest]# ll -h
total 308K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig
-rw-r--r--. 1 root root 100K Aug 15 20:20 sysconfig.tar.bz2
-rw-r--r--. 1 root root 105K Aug 15 20:16 sysconfig.tar.gz
-rw-r--r--. 1 root root  94K Aug 15 20:24 sysconfig.tar.xz
[root@centos7 tartest]# mv sysconfig sysconfig2
[root@centos7 tartest]# ll -h
total 308K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig2
-rw-r--r--. 1 root root 100K Aug 15 20:20 sysconfig.tar.bz2
-rw-r--r--. 1 root root 105K Aug 15 20:16 sysconfig.tar.gz
-rw-r--r--. 1 root root  94K Aug 15 20:24 sysconfig.tar.xz
[root@centos7 tartest]# tar -Jxf sysconfig.tar.xz
[root@centos7 tartest]# ll -h
total 312K
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig
drwxr-xr-x. 6 root root 4.0K Aug 15 20:15 sysconfig2
-rw-r--r--. 1 root root 100K Aug 15 20:20 sysconfig.tar.bz2
-rw-r--r--. 1 root root 105K Aug 15 20:16 sysconfig.tar.gz
-rw-r--r--. 1 root root  94K Aug 15 20:24 sysconfig.tar.xz
[root@centos7 tartest]#

从这儿我们可以看出，小文件归档并压缩反而会变大，但是如果是大文件归档并压缩就可以看出压缩的效果了

七、cpio  复制 从或到文件
cpio命令是通过重定向的方式将文件进行打包备份，还原恢复的工具，它可以解压以“.cpio”或者“.tar”结尾的文件。
 cpio [选项] > 文件名或者设备名
 cpio [选项] < 文件名或者设备名
  选项
 -o 将文件拷贝打包成文件或者将文件输出到设备上
 -i 解包，将打包文件解压或将设备上的备份还原到系统
 -t 预览，查看文件内容或者输出到设备上的文件内容
 -v 显示打包过程中的文件名称
 -d 解包生成目录，在cpio还原时，自动的建立目录
 -c 一种较新的存储方式

示例：

[root@centos7 cpiotest]# cp /boot/initrd-plymouth.img .
[root@centos7 cpiotest]# ll -h
total 9.8M
-rw-r--r--. 1 root root 9.8M Aug 15 20:58 initrd-plymouth.img
[root@centos7 cpiotest]# file initrd-plymouth.img
initrd-plymouth.img: gzip compressed data, from Unix, last modif
ied: Thu Jul 21 12:54:24 2016, max compression
[root@centos7 cpiotest]# mv initrd-plymouth.img initrd-plymouth.img.gz
[root@centos7 cpiotest]# gzip -d initrd-plymouth.img.gz
[root@centos7 cpiotest]# ll -h
total 20M
-rw-r--r--. 1 root root 20M Aug 15 20:58 initrd-plymouth.img
[root@centos7 cpiotest]# file initrd-plymouth.img
initrd-plymouth.img: ASCII cpio archive (SVR4 with no CRC)
[root@centos7 cpiotest]#

cpio -t  预览一下这个镜像文件里面的内容
[root@centos7 cpiotest]# cpio -t < initrd-plymouth.img
.
usr
usr/share
usr/share/plymouth
usr/share/plymouth/themes
usr/share/plymouth/themes/text
usr/share/plymouth/themes/text/text.plymouth
usr/share/plymouth/themes/details
usr/share/plymouth/themes/details/details.plymouth
usr/share/plymouth/themes/charge
usr/share/plymouth/themes/charge/animation-0001.png
usr/share/plymouth/themes/charge/animation-0002.png
usr/share/plymouth/themes/charge/animation-0003.png
usr/share/plymouth/themes/charge/animation-0004.png
usr/share/plymouth/themes/charge/animation-0005.png
usr/share/plymouth/themes/charge/animation-0006.png
usr/share/plymouth/themes/charge/animation-0007.png
usr/share/plymouth/themes/charge/animation-0008.png
usr/share/plymouth/themes/charge/animation-0009.png
usr/share/plymouth/themes/charge/animation-0010.png
usr/share/plymouth/themes/charge/animation-0011.png
usr/share/plymouth/themes/charge/animation-0012.png
usr/share/plymouth/themes/charge/animation-0013.png
usr/share/plymouth/themes/charge/animation-0014.png
usr/share/plymouth/themes/charge/animation-0015.png
usr/share/plymouth/themes/charge/animation-0016.png
usr/share/plymouth/themes/charge/animation-0017.png
usr/share/plymouth/themes/charge/animation-0018.png
usr/share/plymouth/themes/charge/animation-0019.png
usr/share/plymouth/themes/charge/animation-0020.png
usr/share/plymouth/themes/charge/animation-0021.png
usr/share/plymouth/themes/charge/animation-0022.png
usr/share/plymouth/themes/charge/animation-0023.png
usr/share/plymouth/themes/charge/animation-0024.png
usr/share/plymouth/themes/charge/animation-0025.png
usr/share/plymouth/themes/charge/animation-0026.png
usr/share/plymouth/themes/charge/animation-0027.png
usr/share/plymouth/themes/charge/animation-0028.png
usr/share/plymouth/themes/charge/animation-0029.png
usr/share/plymouth/themes/charge/animation-0030.png
usr/share/plymouth/themes/charge/animation-0031.png
usr/share/plymouth/themes/charge/animation-0032.png
usr/share/plymouth/themes/charge/animation-0033.png
usr/share/plymouth/themes/charge/animation-0034.png
usr/share/plymouth/themes/charge/animation-0035.png
usr/share/plymouth/themes/charge/animation-0036.png
usr/share/plymouth/themes/charge/background-tile.png
usr/share/plymouth/themes/charge/box.png
usr/share/plymouth/themes/charge/bullet.png
usr/share/plymouth/themes/charge/charge.plymouth
usr/share/plymouth/themes/charge/entry.png
usr/share/plymouth/themes/charge/lock.png
usr/share/plymouth/themes/charge/throbber-0001.png
usr/share/plymouth/themes/charge/throbber-0002.png
usr/share/plymouth/themes/charge/throbber-0003.png
usr/share/plymouth/themes/charge/throbber-0004.png
usr/share/plymouth/themes/charge/throbber-0005.png
usr/share/plymouth/themes/charge/throbber-0006.png
usr/share/plymouth/themes/charge/throbber-0007.png
usr/share/plymouth/themes/charge/throbber-0008.png
usr/share/plymouth/themes/charge/throbber-0009.png
usr/share/plymouth/themes/charge/throbber-0010.png
usr/share/plymouth/themes/charge/throbber-0011.png
usr/share/plymouth/themes/charge/throbber-0012.png
usr/share/plymouth/themes/charge/watermark.png
usr/share/plymouth/plymouthd.defaults
usr/share/pixmaps
usr/share/pixmaps/system-logo-white.png
usr/share/fonts
usr/share/fonts/dejavu
usr/share/fonts/dejavu/DejaVuSans.ttf
usr/share/fonts/vlgothic
usr/share/fonts/vlgothic/VL-Gothic-Regular.ttf
usr/share/fonts/nhn-nanum
usr/share/fonts/nhn-nanum/NanumGothic.ttf
usr/share/fonts/lohit-assamese
usr/share/fonts/lohit-assamese/Lohit-Assamese.ttf
usr/share/fonts/lohit-bengali
usr/share/fonts/lohit-bengali/Lohit-Bengali.ttf
usr/share/fonts/lohit-gujarati
usr/share/fonts/lohit-gujarati/Lohit-Gujarati.ttf
usr/share/fonts/lohit-devanagari
usr/share/fonts/lohit-devanagari/Lohit-Devanagari.ttf
usr/share/fonts/lohit-kannada
usr/share/fonts/lohit-kannada/Lohit-Kannada.ttf
usr/share/fonts/smc
usr/share/fonts/smc/Meera.ttf
usr/share/fonts/lohit-oriya
usr/share/fonts/lohit-oriya/Lohit-Oriya.ttf
usr/share/fonts/lohit-punjabi
usr/share/fonts/lohit-punjabi/Lohit-Punjabi.ttf
usr/share/fonts/lohit-tamil
usr/share/fonts/lohit-tamil/Lohit-Tamil.ttf
usr/share/fonts/lohit-telugu
usr/share/fonts/lohit-telugu/Lohit-Telugu.ttf
usr/lib64
usr/lib64/libply.so.2.1.0
usr/lib64/libply.so.2
usr/lib64/libply-splash-core.so.2.1.0
usr/lib64/libply-splash-core.so.2
usr/lib64/libudev.so.1.6.2
usr/lib64/libudev.so.1
usr/lib64/librt-2.17.so
usr/lib64/librt.so.1
usr/lib64/libdw-0.163.so
usr/lib64/libdw.so.1
usr/lib64/libgcc_s-4.8.5-20150702.so.1
usr/lib64/libgcc_s.so.1
usr/lib64/libattr.so.1.1.0
usr/lib64/libattr.so.1
usr/lib64/libelf-0.163.so
usr/lib64/libelf.so.1
usr/lib64/liblzma.so.5.0.99
usr/lib64/liblzma.so.5
usr/lib64/libbz2.so.1.0.6
usr/lib64/libbz2.so.1
usr/lib64/plymouth
usr/lib64/plymouth/text.so
usr/lib64/plymouth/details.so
usr/lib64/plymouth/two-step.so
usr/lib64/plymouth/renderers
usr/lib64/plymouth/renderers/drm.so
usr/lib64/plymouth/renderers/frame-buffer.so
usr/lib64/plymouth/label.so
usr/lib64/libply-splash-graphics.so.2.1.0
usr/lib64/libply-splash-graphics.so.2
usr/lib64/libpng15.so.15.13.0
usr/lib64/libpng15.so.15
usr/lib64/libdrm.so.2.4.0
usr/lib64/libdrm.so.2
usr/lib64/libpangocairo-1.0.so.0.3600.8
usr/lib64/libpangocairo-1.0.so.0
usr/lib64/libpango-1.0.so.0.3600.8
usr/lib64/libpango-1.0.so.0
usr/lib64/libgobject-2.0.so.0.4200.2
usr/lib64/libgobject-2.0.so.0
usr/lib64/libglib-2.0.so.0.4200.2
usr/lib64/libglib-2.0.so.0
usr/lib64/libpangoft2-1.0.so.0.3600.8
usr/lib64/libpangoft2-1.0.so.0
usr/lib64/libgmodule-2.0.so.0.4200.2
usr/lib64/libgmodule-2.0.so.0
usr/lib64/libgthread-2.0.so.0.4200.2
usr/lib64/libgthread-2.0.so.0
usr/lib64/libharfbuzz.so.0.936.0
usr/lib64/libharfbuzz.so.0
usr/lib64/libfontconfig.so.1.7.0
usr/lib64/libfontconfig.so.1
usr/lib64/libfreetype.so.6.10.0
usr/lib64/libfreetype.so.6
usr/lib64/libpixman-1.so.0.32.6
usr/lib64/libpixman-1.so.0
usr/lib64/libEGL.so.1.0.0
usr/lib64/libEGL.so.1
usr/lib64/libxcb-shm.so.0.0.0
usr/lib64/libxcb-shm.so.0
usr/lib64/libxcb-render.so.0.0.0
usr/lib64/libxcb-render.so.0
usr/lib64/libxcb.so.1.1.0
usr/lib64/libxcb.so.1
usr/lib64/libXrender.so.1.3.0
usr/lib64/libXrender.so.1
usr/lib64/libX11.so.6.3.0
usr/lib64/libX11.so.6
usr/lib64/libXext.so.6.4.0
usr/lib64/libXext.so.6
usr/lib64/libGL.so.1.2.0
usr/lib64/libGL.so.1
usr/lib64/libffi.so.6.0.1
usr/lib64/libffi.so.6
usr/lib64/libgraphite2.so.3.0.1
usr/lib64/libgraphite2.so.3
usr/lib64/libexpat.so.1.6.0
usr/lib64/libexpat.so.1
usr/lib64/libX11-xcb.so.1.0.0
usr/lib64/libX11-xcb.so.1
usr/lib64/libxcb-dri2.so.0.0.0
usr/lib64/libxcb-dri2.so.0
usr/lib64/libxcb-xfixes.so.0.0.0
usr/lib64/libxcb-xfixes.so.0
usr/lib64/libxcb-shape.so.0.0.0
usr/lib64/libxcb-shape.so.0
usr/lib64/libgbm.so.1.0.0
usr/lib64/libgbm.so.1
usr/lib64/libselinux.so.1
usr/lib64/libXau.so.6.0.0
usr/lib64/libXau.so.6
usr/lib64/libglapi.so.0.0.0
usr/lib64/libglapi.so.0
usr/lib64/libXdamage.so.1.1.0
usr/lib64/libXdamage.so.1
usr/lib64/libXfixes.so.3.1.0
usr/lib64/libXfixes.so.3
usr/lib64/libxcb-glx.so.0.0.0
usr/lib64/libxcb-glx.so.0
usr/lib64/libxcb-dri3.so.0.0.0
usr/lib64/libxcb-dri3.so.0
usr/lib64/libxcb-present.so.0.0.0
usr/lib64/libxcb-present.so.0
usr/lib64/libxcb-randr.so.0.1.0
usr/lib64/libxcb-randr.so.0
usr/lib64/libxcb-sync.so.1.0.0
usr/lib64/libxcb-sync.so.1
usr/lib64/libxshmfence.so.1.0.0
usr/lib64/libxshmfence.so.1
usr/lib64/libXxf86vm.so.1.0.0
usr/lib64/libXxf86vm.so.1
usr/lib64/libpcre.so.1.2.0
usr/lib64/libpcre.so.1
usr/sbin
usr/sbin/plymouthd
usr/bin
usr/bin/plymouth
usr/lib
usr/lib/systemd
usr/lib/systemd/system
usr/lib/systemd/system/systemd-ask-password-plymouth.path
usr/lib/systemd/system/systemd-ask-password-plymouth.service
usr/lib/systemd/system/plymouth-switch-root.service
usr/lib/systemd/system/plymouth-start.service
usr/lib/systemd/system/plymouth-quit.service
usr/lib/systemd/system/plymouth-quit-wait.service
usr/lib/systemd/system/plymouth-reboot.service
usr/lib/systemd/system/plymouth-kexec.service
usr/lib/systemd/system/plymouth-poweroff.service
usr/lib/systemd/system/plymouth-halt.service
usr/lib/systemd/system/initrd-switch-root.target.wants
usr/lib/systemd/system/initrd-switch-root.target.wants/plymouth-
switch-root.serviceusr/lib/systemd/system/initrd-switch-root.target.wants/plymouth-
start.serviceusr/lib/systemd/system/sysinit.target.wants
usr/lib/systemd/system/sysinit.target.wants/plymouth-start.servi
ceusr/lib/systemd/system/multi-user.target.wants
usr/lib/systemd/system/multi-user.target.wants/plymouth-quit.ser
viceusr/lib/systemd/system/multi-user.target.wants/plymouth-quit-wai
t.serviceusr/lib/systemd/system/reboot.target.wants
usr/lib/systemd/system/reboot.target.wants/plymouth-reboot.servi
ceusr/lib/systemd/system/kexec.target.wants
usr/lib/systemd/system/kexec.target.wants/plymouth-kexec.service
usr/lib/systemd/system/poweroff.target.wants
usr/lib/systemd/system/poweroff.target.wants/plymouth-poweroff.s
erviceusr/lib/systemd/system/halt.target.wants
usr/lib/systemd/system/halt.target.wants/plymouth-halt.service
lib64
sbin
bin
etc
etc/os-release
etc/plymouth
etc/plymouth/plymouthd.conf
39590 blocks
[root@centos7 cpiotest]#

cpio -i  解包（会在当前目录中生成打包时的目录及文件）

[root@centos7 cpiotest]# cpio -i < initrd-plymouth.img
39590 blocks
[root@centos7 cpiotest]# ll -h
total 20M
lrwxrwxrwx. 1 root root    7 Aug 15 21:28 bin -> usr/bin
drwxr-xr-x. 3 root root 4.0K Aug 15 21:28 etc
-rw-r--r--. 1 root root  20M Aug 15 21:23 initrd-plymouth.img
lrwxrwxrwx. 1 root root    9 Aug 15 21:28 lib64 -> usr/lib64
lrwxrwxrwx. 1 root root    8 Aug 15 21:28 sbin -> usr/sbin
drwxr-xr-x. 7 root root 4.0K Aug 15 21:28 usr
[root@centos7 cpiotest]#

cpio  自制linux系统需要用到的工具，帮助我们去打包当前系统上的标准数据

基本上所有的运用示例都贴上来了，相信大家看的明白，理解的了。

本文出自 “爱情防火墙” 博客，请务必保留此出处http://183530300.blog.51cto.com/894387/1839022

原文：http://183530300.blog.51cto.com/894387/1839022