Linux之使用shell生成随机mac地址

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摘要

有时候我们需要一堆的mac地址，于是就有了这些方便的命令

[[email protected] ~]# echo "00:60:2F$(dd bs=1 count=3 if=/dev/random 2>/dev/null |hexdump -v -e '/1 ":%02X"')"
[[email protected] ~]# echo "$(hexdump -n3 -e'/3 "00:60:2F" 3/1 ":%02X"' /dev/random)"
[[email protected] ~]# printf '00:60:2F:%02X:%02X:%02X\n' $[RANDOM%256] $[RANDOM%256] $[RANDOM%256]
[[email protected] ~]# echo 00:60:2f:`openssl rand -hex 3 | sed 's/\(..\)/\1:/g; s/.$//'`