输出包含有root的行
awk -F ":" '/root/ {print $1, $3, $0}' password
root 0 root:x:0:0:root:/root:/bin/bash
operator 11 operator:x:11:0:operator:/root:/sbin/nologin
输出包含有root的行
awk -F ":" '/root/ {print $1, $3, $0}' password
root 0 root:x:0:0:root:/root:/bin/bash
operator 11 operator:x:11:0:operator:/root:/sbin/nologin
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