系统：centos 7.2
#!/bin/bash
cat << EOF > /etc/motd
WelcomeEOF
LoginUser=uptime | awk ‘{print $4}‘
w=w | awk ‘NR>2{print "登录时间:" $4 "\t" "登录用户:"$1}‘
i=whoami
nczs=free -m |grep "Mem" | awk ‘{print $2}‘
cpuzs=grep "model name" /proc/cpuinfo | cut -f2 -d:
wlzs=grep ‘physical id‘ /proc/cpuinfo | sort -u | wc -l
hxsl=grep ‘core id‘ /proc/cpuinfo | sort -u | wc -l
xtbb=more /etc/redhat-release
nhbb=uname -r
xtkj=getconf LONG_BIT
Ip=ip a | grep inet | grep -v inet6 | grep -v 127 | sed ‘s/^[ \t]*//g‘ | cut -d ‘ ‘ -f2
if [ $LoginUser -ge 1 ]
then
echo "==========================================="
echo "系统登录人数为: $LoginUser人"
echo "$w"
echo "==========================================="
echo "系统内存总数为: $nczs M"
echo "==========================================="
echo "物理CPU个数: $wlzs个,核心CPU个数: $hxsl个"
echo "$cpuzs"
echo "==========================================="
echo "系统版本: $xtbb"
echo "内核版本: $nhbb"
echo "系统架构: x$xtkj位"
echo "物理地址: $Ip"
echo "==========================================="
echo "您是管理员$i用户,拥有最大权限,请谨慎操作！"
echo ""
fi
vim .bash_profile
加入脚本路径，只为root用户使用，在/etc/profile 内添加可为所有用户使用。
原文地址：http://blog.51cto.com/amunlinux/2104045