// Create Time: 201707092356 Update Time: 201707120653 //
与tar相似cpio将文件归档到硬盘或磁带等存储设备中。在所处理的文件类型方面，它比tar更全面，但也更复杂。cpio在tar更为可靠，因为如果一个tar文件中某处有一个坏块，就不能对备份文件的其它部分进行访问，而使用cpio则只有坏块不能被访问，其他部分照样可以被访问。
4.1 Copy-Out Mode Syntax: In copy-out mode, cpio copies files into an archive. It reads a list of filenames, one per line, on the standard input and writes the archive onto the standard output. A typical way to generate the list of filenames is with the find command; 4.2 Copy-In Mode Syntax: In copy-in mode, cpio copies files out of an archive or lists the archive contents. It reads the archive from the standard input. Any non-option command line arguments are shell globbing patterns; only files in the archive whose names match one or more of those patterns are copied from the archive. 4.3 Copy-Pass Mode Syntax: In copy-pass mode, cpio copies files from one directory tree to another, combining the copy-out and copy-in steps without actually using an archive. It reads the list of files to copy from the standard input; the directory into which it will copy them is given as a non-option argument.
### 当创建归档文件时，cpio从标准输入读取要备份的文件列表， ### 然后把生成的归档文件到标准输出,文件列表一般使用find或ls生成. ### cpio默认不会创建目录(-d)，而且默认不会覆盖已有文件(-u) ### 备份整个目录树 % find . -print -depth | cpio -ov > tree.cpio ### 备份当前目录 % ls | cpio -ov > directory.cpio默认不保留源文件，可使用gzip -c file > file.gz保留源文件
可查看.gz文件内容
