Linux同时解压多个压缩档案的方法

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  在Linux系统中Deepin命令行上可以对文件进行解压,使用Deepin命令行还可以同时对多个tarball 文件解压。那么Linux中怎么在Deepin同时解压多个压缩档案呢?

  $ ls

  backup1.tar backup2.tar backup3.tar

  我们需要一起把它们全部解压,该如何做呢?

  我们先来简要讲解一下 tar 的用法.tar 命令原用于从磁带设备读写文件(tar 即是 Tape ARchiver 的缩略)。我们只能指定要放入压缩档案或要解压出的文件名(如 tar x myfineonthe.tape)。可以使用 -f 选项可以告诉 tar 该档案不是在某个磁带上而是在文件中。该选项只接受一个参数——压缩档案的文件名。所有其它(后面的)参数都被看作上面提到的压缩文件的一部分。

  tar -x -f backup.tar myfile.txt

  # 或者使用下面更常见的句法

  tar xf backup.tar myfile.txt

  现在回到我们之前的问题上来:同时解压当前目录下面的 backup1.tar backup2.tar backup3.tar 三个文件。可能会有朋友要使用 tar xf *.tar,我们来看看其执行结果:

  $ tar xf *.tar

  tar: backup2.tar: Not found in archive

  tar: backup3.tar: Not found in archive

  tar: Exiting with failure status due to previous errors

  这是怎么回事?Shell 通过匹配文件名将 *.tar 替换,上面的一行实际等同于:

  tar xf backup1.tar backup2.tar backup3.tar

  从我们之前对于 tar 的用法解释中可知,我们在这里使用的命令的含义为“从压缩档案 backup1.tar 中解压出 backup2.tar 和 backup3.tar”。只有在 backup1.tar 这个压缩档案中有相应的文件名,才能执行成功。

  解决办法:从压缩档案中将文件一一解压。

  我们使用的是一个 UNIX shell (Bash),可以用循环来实现:

  for tarname in *.tar; do

  tar xf “$tarname”

  done

  下面说一下循环和 for-循环两个基本概念。循环是用来在满足某个条件之前重复其内部的代码的一种结构。满足该条件时循环即停止,其外部的代码会继续执行.for-循环是将一变量逐次设置为一个列表中的各个值,并重复直到该列表用完的一类循环结构。

  在这里,for-循环会将匹配 *.tar 的文件名作为参数反复调用执行 tar xf.这样我们就将压缩档案逐一“自动地”解压出来。

  还有另一种很常见的档案格式是 ZIP.解压 ZIP 文件的命令是 unzip.这里也有同样的问题:unzip 只接受一个选项来指定 ZIP 文件。

  可以用同样的方法来解决

  for zipfile in *.zip; do

  unzip “$zipfile”

  done

  对于 unzip 命令还有另一种做法:它可以读入类似 shell 的样式(pattern)来指定 ZIP 文件名。为防止 shell 对于这些样式的解释,需要使用引号.unzip(而非 shell)在这里会解释 *.zip:

  unzip “*.zip”

  # 还可以用下面这种看起来更明晰的做法:

  unzip \*.zip

  以上就是LinuxLinux中怎么在Deepin同时解压多个压缩档案的教程了,使用这个教程就不用一个一个去解压文件了。

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