minitop

#!/bin/sh
# 判断参数类型
    # 以下最少全调用0次，最多全调用1次
    # 判断是否有 -h | --help            //输出帮助信息
        # 退出
    # 判断是否有 -w | --watch           //动态监视
        # 开启动态执行
    # 判断是否有 -f | --full            //返回原文件
        # 返回所有文件拼接后结果
    # 以下只能任意参数调用1次
    # 判断是否有-c -1 | --cpuinfo       // 只显示CPU类型、型号、内核版本等信息从系统启动至今的时间等
    # 判断是否有-m -2 | --meminfo       // 只显示内存总容量及当前可用内存量
    # 判断是否有-l -3 | --loadinfo      // 系统平均负载
    # 判断是否有-f -4 | --fileinfo      // 支持的文件系统类型
    # 判断是否有-d -5 | --moduleinfo    // 系统正在使用的module信息
    # 判断是否有-a | --all              // 返回所有信息   
span=1 #刷新间隔

HelpInfo="COMMAND NAME:minitop\n\n

Usage: minitop [OPTION]... [INFO]\n\n

This procedure is used to monitor system status\n\n

\t-1,-c,\t--cpuinfo\t|\tdisplay cpuinfo\n
\t-2,-m,\t--meminfo\t|\tdisplay meminfo\n
\t-3,-l,\t--loadinfo\t|\tdisplay loadinfo\n
\t-4,-f,\t--fileinfo\t|\tdisplay fileinfo\n
\t-5,-d,\t--modulesinfo\t|\tdisplay moduleinfo\n
\t-a,-A,\t--all\t|\tdisplay all message\n\n

\t-h,-H,\t--help\t|\tDisplay help info\n
\t-w,\t--watch\t|\tDynamic moniter\n
\t-F,\t--full\t|\tdisplay raw message\n
"

alias displayHelpInfo='echo -e $HelpInfo'

#region 返回CPU类型、型号、内核版本等信息从系统启动至今的时间
returnCpuinfo(){
num1=`cat /proc/uptime | cut -d' ' -f1 | cut -d. -f1`       # 系统启动到现在的时间（以秒为单位）
num2=`cat /proc/uptime | cut -d' ' -f2 | cut -d. -f1`       # 系统空闲的时间（以秒为单位）
N=`cat /proc/cpuinfo | grep "model name"  | wc -l`  #逻辑核数

CPUINFO="
CPU类型：`cat /proc/cpuinfo | grep -v 'model name' | grep 'model' |  cut -d: -f2 | uniq >&1`
CPU型号：`cat /proc/cpuinfo | grep 'model name' |  cut -d: -f2 | uniq >&1`
CPU频率：`cat /proc/cpuinfo | grep 'cpu MHz' |  cut -d: -f2 | uniq >&1` MHz
是否含有FPU：`cat /proc/cpuinfo | grep 'fpu' | grep -v 'fpu_exception' | grep -v 'flags' | cut -d: -f2 | uniq >&1`
内核版本：`cat /proc/version | cut -d# -f1 >&1`
系统启动至今时间：`echo $[$num1/3600] >&1`h
占用率：`echo $[1-($num2/($num1*N))*100] | cut -d. -f1 >&1`%"
}
#endregion

#region 返回内存总容量及当前可用内存量
returnMeminfo(){
MEMINFO="
内存总容量：`cat /proc/meminfo | grep MemTotal | cut -d: -f2 | cut -d' ' -f8-9`
当前可用内存量：`cat /proc/meminfo | grep MemAvailable | cut -d: -f2 | cut -d' ' -f4-5`
"
}
#endregion

#region 返回系统平均负载
returnLoadinfo(){
N=`cat /proc/cpuinfo | grep "model name"  | wc -l`  #逻辑核数
n1=`cat /proc/loadavg | cut -d' ' -f1 | cut -d. -f1``cat /proc/loadavg | cut -d' ' -f1 | cut -d. -f2`   # 1分钟内的平均进程*100
n2=`cat /proc/loadavg | cut -d' ' -f2 | cut -d. -f1``cat /proc/loadavg | cut -d' ' -f2 | cut -d. -f2`   # 5分钟内的平均进程*100
n3=`cat /proc/loadavg | cut -d' ' -f3 | cut -d. -f1``cat /proc/loadavg | cut -d' ' -f3 | cut -d. -f2`   # 15分钟内的平均进程*100

n1=`echo -e ${n1} | sed -r 's/0*([0-9])/\1/'`
n2=`echo -e ${n2} | sed -r 's/0*([0-9])/\1/'`
n3=`echo -e ${n3} | sed -r 's/0*([0-9])/\1/'`

LOADINFO="系统平均负载（1分钟内）：$[${n1}/$N]%
系统平均负载（5分钟内）：$[${n2}/$N]%
系统平均负载（15分钟内）：$[${n3}/$N]%
"
}
#endregion

#region 返回支持的文件系统类型
returnFileinfo(){
FILEINFO="支持的虚拟文件系统(`cat /proc/filesystems | grep nodev | cut -f2 | wc -l`种)：`cat /proc/filesystems | grep nodev | cut -f2 |sed ':a;N;s/\n/ /g;ta'`
支持的实体文件系统(`cat /proc/filesystems | grep -v nodev | cut -f2 | wc -l`种)：`cat /proc/filesystems | grep -v nodev | cut -f2 |sed ':a;N;s/\n/ /g;ta'`\n"
}
#endregion

#region 返回系统正在使用的module信息
returnModulesinfo(){
MODULESINFO="系统正在使用的module信息：
模块名\t大小\t使用者\n"
while read row
do
    MODULESINFO+="`echo $row | cut -d' ' -f1`\t`echo $row | cut -d' ' -f2`\t`echo $row | cut -d' ' -f3`\n"
done < /proc/modules
}

#endregion

if [ "$#" == "0" ] ;then
    displayHelpInfo
    exit
else
    for i in "$@"; do
        if [ "$i" == "-h" -o "$i" == "-H" -o "$i" == "--help" ] ;then
            displayHelpInfo
            exit
        fi
    done
    for i in "$@"; do
        if [ "$i" == "-w" -o "$i" == "--watch"  ] ;then
            w=1     # 用于监视
        elif [ "$i" == "-F" -o "$i" == "--full" ] ;then
            f=1     # 用于展示全局信息
        fi
    done
    for i in "$@"; do
        if [ "$i" == "-1" -o "$i" == "-c" -o "$i" == "--cpuinfo" ] ;then
            if [ "$w" = 1 ] ;then
                while :
                do
                    message+="`date -u`\t"
                    message+="|\tTIME SPAN:${span}s\n"
                    message+="----------------------------------------------------\n"
                    message+=">>>---\tCPUINFO:\n"
                    if [ "$f" = 1 ] ;then
                        message+="`cat /proc/cpuinfo`\n"
                        message+="`cat /proc/version`\n"
                        message+="`cat /proc/uptime`\n"
                        message+="`cat /proc/stat`\n"
                    else
                        returnCpuinfo
                        message+=$CPUINFO
                    fi
                    clear
                    echo -e "$message"
                    sleep $span
                    message=""
                done
            else
                if [ "$f" = 1 ] ;then
                    cat /proc/cpuinfo /proc/version /proc/uptime /proc/stat
                else
                    returnCpuinfo
                    echo -e "$CPUINFO"
                fi
                exit 0
            fi
        elif [ "$i" == "-2" -o "$i" == "-m" -o "$i" == "--meminfo" ] ;then
            if [ "$w" = 1 ] ;then
                while :
                do
                    message+="`date -u`\t"
                    message+="|\tTIME SPAN:${span}s\n"
                    message+="----------------------------------------------------\n"
                    message+=">>>---\tMEMINFO:\n"
                    if [ "$f" = 1 ] ;then
                        message+="`cat /proc/meminfo`\n"
                        message+="`cat /proc/zoneinfo`\n"
                        message+="`cat /proc/slabinfo`\n"
                    else
                        returnMeminfo
                        message+=$MEMINFO
                    fi
                    clear
                    echo -e "$message"
                    sleep $span
                    message=""
                done
            else
                if [ "$f" = 1 ] ;then
                    cat /proc/meminfo
                else
                    returnMeminfo
                    echo -e "$MEMINFO"
                fi
                exit 0
            fi
        elif [ "$i" == "-3" -o "$i" == "-l" -o "$i" == "--loadinfo" ] ;then
            if [ "$w" = 1 ] ;then
                while :
                do
                    message+="`date -u`\t"
                    message+="|\tTIME SPAN:${span}s\n"
                    message+="----------------------------------------------------\n"
                    message+=">>>---\tLOADINFO:\n"
                    if [ "$f" = 1 ] ;then
                        message+="`cat /proc/loadavg`\n"
                    else
                        returnLoadinfo
                        message+=$LOADINFO
                    fi
                    clear
                    echo -e "$message"
                    sleep $span
                    message=""
                done
            else
                if [ "$f" = 1 ] ;then
                    cat /proc/loadavg
                else
                    returnLoadinfo
                    echo -e "$LOADINFO"
                fi
                exit 0
            fi
        elif [ "$i" == "-4" -o "$i" == "-f" -o "$i" == "--fileinfo" ] ;then
            if [ "$w" = 1 ] ;then
                while :
                do
                    message+="`date -u`\t"
                    message+="|\tTIME SPAN:${span}s\n"
                    message+="----------------------------------------------------\n"
                    message+=">>>---\tFILEINFO:\n"
                    if [ "$f" = 1 ] ;then
                        message+="`cat /proc/filesystems`\n"
                    else
                        returnFileinfo
                        message+=$FILEINFO
                    fi
                    clear
                    echo -e "$message"
                    sleep $span
                    message=""
                done
            else
                if [ "$f" = 1 ] ;then
                    cat /proc/filesystems
                else
                    returnFileinfo
                    echo -e "$FILEINFO"
                fi
                exit 0
            fi
        elif [ "$i" == "-5" -o "$i" == "-d" -o "$i" == "--modulesinfo" ] ;then
            if [ "$w" = 1 ] ;then
                while :
                do
                    message+="`date -u`\t"
                    message+="|\tTIME SPAN:${span}s\n"
                    message+="----------------------------------------------------\n"
                    message+=">>>---\tMODULESINFO:\n"
                    if [ "$f" = 1 ] ;then
                        message+="`cat /proc/modules`\n"
                    else
                        returnModulesinfo
                        message+=$MODULESINFO
                    fi
                    clear
                    echo -e "$message"
                    sleep $span
                    message=""
                done
            else
                if [ "$f" = 1 ] ;then
                    cat /proc/modules
                else
                    returnModulesinfo
                    echo -e "$MODULESINFO"
                fi
                exit 0
            fi
        elif [ "$i" == "-a" -o "$i" == "-A" -o "$i" == "--all" ] ;then
            if [ "$w" = 1 ] ;then
                while :
                do
                    message+="`date -u`\t"
                    message+="|\tTIME SPAN:${span}s\n"
                    message+="----------------------------------------------------\n"
                    message+=">>>---\tALLINFO:\n"
                    if [ "$f" = 1 ] ;then
                        message+="`cat /proc/cpuinfo`\n"
                        message+="`cat /proc/version`\n"
                        message+="`cat /proc/uptime`\n"
                        message+="`cat /proc/stat`\n"
                        message+="`cat /proc/meminfo`\n"
                        message+="`cat /proc/zoneinfo`\n"
                        message+="`cat /proc/slabinfo`\n"
                        message+="`cat /proc/loadavg`\n"
                        message+="`cat /proc/filesystems`\n"
                        message+="`cat /proc/modules`\n"
                    else
                        returnCpuinfo
                        message+="$CPUINFO\n"
                        returnMeminfo
                        message+="$MEMINFO\n"
                        returnLoadinfo
                        message+="$LOADINFO\n"
                        returnFileinfo
                        message+="$FILEINFO\n"
                        returnModulesinfo
                        message+="$MODULESINFO\n"
                    fi
                    clear
                    echo -e "$message"
                    sleep $span
                    message=""
                done
            else
                if [ "$f" = 1 ] ;then
                    cat /proc/cpuinfo /proc/version /proc/uptime /proc/stat
                    cat /proc/meminfo
                    cat /proc/loadavg
                    cat /proc/filesystems
                    cat /proc/modules
                else
                    returnCpuinfo
                    echo -e $CPUINFO
                    returnMeminfo
                    echo -e $MEMINFO
                    returnLoadinfo
                    echo -e $LOADINFO
                    returnFileinfo
                    echo -e $FILEINFO
                    returnModulesinfo
                    echo -e $MODULESINFO
                fi
                exit 0
            fi
        fi
    done
fi