vi info.sh
#!/bin/bash
echo "Welcome to my shell!"
echo "当前系统登录用户数:`who | wc -l` "
echo "当前时间:`date +'%Y-%m-%d %H:%M:%S'` "
echo "当前磁盘利用率:`df -hT | grep "/$" | awk '{print $6}'`"
echo "当前系统共有的进程数:`ps | wc -l`"
echo "当前空闲容量 `free | grep "Mem:" | awk '{print$4}'` "KB
echo "当前cpu利用率 `uptime | awk -F, '{print$3}' | awk '{print$3}'` " %
磁盘利用率
df -hT |awk '/\/$/{print $6}'
内存空闲(按照你的算法)
free |awk '/^Mem/{print $4"KB"}'
cpu利用率
uptime |grep -Po '(?<=average: )[^,]+'