系统状态
平均负载：uptime | sed -nr 's/.*(load.*)/\1/gp'
进程数量
总数量：top -b -n 1 | sed -nr 's/.*Tasks: ([0-9]+ total).*/\1/gp'
每个用户开启的进程数量：ps auxh | awk '{print $1}' | grep -v '+' |sort | uniq | while read U; do echo -n ${U}:;ps h -u ${U}| wc -l; done<br>
缰死进程：top -b -n 1 | sed -rn 's/.* ([0-9]+ zombie)$/\1/gp'; ps -eo stat,user,pid,time,args | grep '^Z'
物理内存
总内存：free -h | awk 'NR==2{print $2}'<br>
可用内存：free -h | awk 'NR==2{print $7}'<br>
筛选内存使用率最高的前10个进程：top -b -n 1 -o %MEM | sed -n '/\%MEM/,+10p'
交换分区
总容量：free -h | awk 'NR==3{print $2}'
未使用空间：free -h | awk 'NR==3{print $4}'<br>
cpu
空闲百分比：top -b -n 1 | sed -nr '/\%Cpu/s/^.*ni,\s*(.*[^ ]).*id,.*/idle: \1%/gp'<br>
筛选CPU占用最高的10个进程：top -b -n 1 -o %CPU | sed -n '/\%MEM/,+10p'<br>
子主题
