用户登陆显示cpu、负载、内存信息

#用户登陆显示cpu、负载、内存信息
#!/bin/bash
#
hostip=`ifconfig eth0 |awk -F" +|:" '/Bcast/{print $4}'`
date=`date "+%F %T %A"`
load=`uptime |awk -F: '{print $NF}'`
usage=`df -h / | awk 'NR==2{print $(NF-1)}'`
fssize=`df -h / |awk 'NR==2{print $2}'`
usernum=`uptime |awk '{print $4}'`
memused=`free -k |awk '/Mem/ {print $3/$2*100}'`%
echo -e '\033[32;1m################ Welcome to Server #############################\033[0m'
cat <<EOF
  System information as of $date
  System load:  $load
  Usage of /:   $usage of $fssize
  Users logged in:  $usernum users
  Memory usage: $memused
  IP address for eth0: $hostip
EOF
echo -e '\033[32;1m#################################################################\033[0m'

把上面的文本cp到 /etc/profile.d/.sh
然后chmod +x /etc/profile.d/.sh