1.备份命令 主要有下面2种


  2.tar 命令

 1.cp命令用法  cp -Rup  /boot  /usr/backup

   参数:p (保留目录和文件的属性)

            u (增量备份=叠加)

2.tar 命令备份

  tar -zcf /back/2011.3.3_etc.tar.gz /etc (备份etc目录)

tar -zcf /back/2011.3.3_3fen.tar.gz /etc /usr/local ( 一次备份多个目录和文件)

tar -ztf /back/2011.3.3_etc.tar.gz (查看备份包里的文件--不是解压)

tar -zxf /back/2011.3.3_etc.tar.gz (恢复备份文件-注意:这里的解压时默认恢复到备份目录,但是默认恢复到的目录是etc而不是/etc了,所以大家这点注意。不过后面可以跟 -C / 目录来指定恢复目录)



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