第二周作业

#!/bin/bash
  
ifconfig | grep inet | head -n1 | tr -s ' ' | cut -d" " -f3
ifconfig | grep inet | head -n1 | tr -s ' ' | cut -d" " -f3 | grep '3' > /dev/null
TEST=$(echo $?)
if [ $TEST -eq 0 ];then
        date
else
        for i in {0..100};do
                useradd mageedu_$i
        done
fi

cat /etc/passwd | grep '/bin/bash' | cut -d":" -f1
yum install -y nginx
systemct enable nginx