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1000::/home/sky:/bin/bash [root@web01 ~]# grep -nvf /opt/passwd.back /etc/passwd 27:sky:x:1000:1000::/home/sky:/bin/bash [root@web01 ~]# cat 1.txt 1,zls,666,zls,123 2,wls,777,wls,456 3,cls,888,cls,789 4,lls,