检查Linux空口令账户及其统未锁定的账号

Linux空口令账户存在极其不安全，检查命令如下：

检查空口令账户

cat /etc/shadow | /bin/awk -F: '($2 == "" ) { print "user " $1 " does not have a password "}'

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执行如下命令查看系统未锁定的账号:
cat /etc/shadow|sed '/^\s*#/d'|awk -F: '($2!~/^*/) && ($2!~/^!!/) {print $1}'