1. 创建/tmp目录下的:a_c,a_d,b_c,b_d

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2. 创建/tmp/mylinux目录下面的:

mkdir -p /tmp/mylinux/{bin,boot/grub,dev,etc/{rc.d/init.d,sysconfig/network-scripts},lib/modules,lib64,proc,sbin,sys,tmp,usr/local/{bin,sbin},var,lock,log,run}

linux练习_Linux_02