mirror of
https://github.com/dunwu/linux-tutorial.git
synced 2024-04-15 19:55:24 +08:00
329 lines
8.0 KiB
Bash
329 lines
8.0 KiB
Bash
#!/usr/bin/env bash
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##############################################################################
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# console color
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C_RESET="$(tput sgr0)"
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C_BLACK="\033[1;30m"
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C_RED="\033[1;31m"
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C_GREEN="\033[1;32m"
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C_YELLOW="\033[1;33m"
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C_BLUE="\033[1;34m"
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C_PURPLE="\033[1;35m"
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C_CYAN="\033[1;36m"
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C_WHITE="\033[1;37m"
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##############################################################################
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printf "${C_PURPLE}"
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cat << EOF
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###################################################################################
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# 系统信息检查脚本
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# @author: Zhang Peng
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###################################################################################
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EOF
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printf "${C_RESET}"
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[[ $(id -u) -gt 0 ]] && echo "请用root用户执行此脚本！" && exit 1
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sysversion=$(rpm -q centos-release | cut -d- -f3)
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double_line="==============================================================="
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line="----------------------------------------------"
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# 打印头部信息
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printHeadInfo() {
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cat << EOF
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+---------------------------------------------------------------------------------+
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| 欢迎使用 【系统信息检查脚本】 |
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| @author: Zhang Peng |
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+---------------------------------------------------------------------------------+
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EOF
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}
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# 打印尾部信息
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printFootInfo() {
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cat << EOF
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+---------------------------------------------------------------------------------+
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| 脚本执行结束，感谢使用！ |
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+---------------------------------------------------------------------------------+
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EOF
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}
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options=( "获取系统信息" "获取服务信息" "获取CPU信息" "获取系统网络信息" "获取系统内存信息" "获取系统磁盘信息" "获取CPU/内存占用TOP10" "获取系统用户信息" "输出所有信息" "退出" )
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printMenu() {
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printf "${C_BLUE}"
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printf "主菜单：\n"
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for i in "${!options[@]}"; do
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index=`expr ${i} + 1`
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val=`expr ${index} % 2`
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printf "\t(%02d) %-30s" "${index}" "${options[$i]}"
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if [[ ${val} -eq 0 ]]; then
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printf "\n"
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fi
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done
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printf "${C_BLUE}请输入需要执行的指令：\n"
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printf "${C_RESET}"
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}
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# 获取系统信息
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get_systatus_info() {
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sys_os=$(uname -o)
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sys_release=$(cat /etc/redhat-release)
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sys_kernel=$(uname -r)
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sys_hostname=$(hostname)
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sys_selinux=$(getenforce)
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sys_lang=$(echo $LANG)
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sys_lastreboot=$(who -b | awk '{print $3,$4}')
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sys_runtime=$(uptime | awk '{print $3,$4}' | cut -d, -f1)
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sys_time=$(date)
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sys_load=$(uptime | cut -d: -f5)
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cat << EOF
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【系统信息】
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系统: ${sys_os}
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发行版本: ${sys_release}
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系统内核: ${sys_kernel}
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主机名: ${sys_hostname}
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selinux状态: ${sys_selinux}
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系统语言: ${sys_lang}
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系统当前时间: ${sys_time}
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系统最后重启时间: ${sys_lastreboot}
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系统运行时间: ${sys_runtime}
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系统负载: ${sys_load}
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EOF
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}
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# 获取CPU信息
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get_cpu_info() {
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Physical_CPUs=$(grep "physical id" /proc/cpuinfo | sort | uniq | wc -l)
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Virt_CPUs=$(grep "processor" /proc/cpuinfo | wc -l)
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CPU_Kernels=$(grep "cores" /proc/cpuinfo | uniq | awk -F ': ' '{print $2}')
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CPU_Type=$(grep "model name" /proc/cpuinfo | awk -F ': ' '{print $2}' | sort | uniq)
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CPU_Arch=$(uname -m)
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cat << EOF
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【CPU信息】
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物理CPU个数:$Physical_CPUs
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逻辑CPU个数:$Virt_CPUs
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每CPU核心数:$CPU_Kernels
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CPU型号:$CPU_Type
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CPU架构:$CPU_Arch
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EOF
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}
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# 获取服务信息
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get_service_info() {
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port_listen=$(netstat -lntup | grep -v "Active Internet")
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kernel_config=$(sysctl -p 2> /dev/null)
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if [[ ${sysversion} -gt 6 ]]; then
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service_config=$(systemctl list-unit-files --type=service --state=enabled | grep "enabled")
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run_service=$(systemctl list-units --type=service --state=running | grep ".service")
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else
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service_config=$(/sbin/chkconfig | grep -E ":on|:启用" | column -t)
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run_service=$(/sbin/service --status-all | grep -E "running")
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fi
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cat << EOF
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【服务信息】
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${service_config}
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${line}
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运行的服务:
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${run_service}
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${line}
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监听端口:
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${port_listen}
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${line}
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内核参考配置:
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${kernel_config}
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EOF
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}
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# 获取系统内存信息
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get_mem_info() {
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check_mem=$(free -m)
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MemTotal=$(grep MemTotal /proc/meminfo | awk '{print $2}') #KB
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MemFree=$(grep MemFree /proc/meminfo | awk '{print $2}') #KB
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let MemUsed=MemTotal-MemFree
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MemPercent=$(awk "BEGIN {if($MemTotal==0){printf 100}else{printf \"%.2f\",$MemUsed*100/$MemTotal}}")
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report_MemTotal="$((MemTotal/1024))" "MB" #内存总容量(MB)
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report_MemFree="$((MemFree/1024))" "MB" #内存剩余(MB)
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report_MemUsedPercent=$(free | sed -n '2p' | gawk 'x = int(( $3 / $2 ) * 100) {print x}' | sed 's/$/%/')
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cat << EOF
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【内存信息】
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内存总容量(MB): ${report_MemTotal}
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内存剩余量(MB):${report_MemFree}
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内存使用率: ${report_MemUsedPercent}
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EOF
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}
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# 获取系统网络信息
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get_net_info() {
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pri_ipadd=$(ip addr | awk '/^[0-9]+: / {}; /inet.*global/ {print gensub(/(.*)\/(.*)/, "\\1", "g", $2)}')
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pub_ipadd=$(curl ifconfig.me -s)
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gateway=$(ip route | grep default | awk '{print $3}')
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mac_info=$(ip link | egrep -v "lo" | grep link | awk '{print $2}')
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dns_config=$(egrep -v "^$|^#" /etc/resolv.conf)
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route_info=$(route -n)
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cat << EOF
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【网络信息】
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系统公网地址:${pub_ipadd}
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系统私网地址:${pri_ipadd}
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网关地址:${gateway}
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MAC地址:${mac_info}
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路由信息:
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${route_info}
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DNS 信息:
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${dns_config}
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EOF
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}
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# 获取系统磁盘信息
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get_disk_info() {
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disk_info=$(fdisk -l | grep "Disk /dev" | cut -d, -f1)
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disk_use=$(df -hTP | awk '$2!="tmpfs"{print}')
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disk_percent=$(free | sed -n '2p' | gawk 'x = int(( $3 / $2 ) * 100) {print x}' | sed 's/$/%/')
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disk_inode=$(df -hiP | awk '$1!="tmpfs"{print}')
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cat << EOF
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【磁盘信息】
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${disk_info}
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磁盘使用: ${disk_use}
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磁盘使用百分比: ${disk_percent}
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inode信息: ${disk_inode}
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EOF
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}
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# 获取系统用户信息
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get_sys_user() {
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login_user=$(awk -F: '{if ($NF=="/bin/bash") print $0}' /etc/passwd)
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ssh_config=$(egrep -v "^#|^$" /etc/ssh/sshd_config)
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sudo_config=$(egrep -v "^#|^$" /etc/sudoers | grep -v "^Defaults")
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host_config=$(egrep -v "^#|^$" /etc/hosts)
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crond_config=$(for cronuser in /var/spool/cron/*; do
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ls ${cronuser} 2> /dev/null | cut -d/ -f5; egrep -v "^$|^#" ${cronuser} 2> /dev/null;
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echo "";
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done)
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cat << EOF
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【用户信息】
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系统登录用户:
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${login_user}
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${line}
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ssh 配置信息:
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${ssh_config}
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${line}
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sudo 配置用户:
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${sudo_config}
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${line}
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定时任务配置:
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${crond_config}
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${line}
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hosts 信息:
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${host_config}
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EOF
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}
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# 获取CPU/内存占用TOP10
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get_process_top_info() {
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top_title=$(top -b n1 | head -7 | tail -1)
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cpu_top10=$(top -b n1 | head -17 | tail -11)
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mem_top10=$(top -b n1 | head -17 | tail -10 | sort -k10 -r)
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cat << EOF
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【TOP10】
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CPU占用TOP10:
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${cpu_top10}
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内存占用TOP10:
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${top_title}
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${mem_top10}
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EOF
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}
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show_dead_process() {
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printf "僵尸进程：\n"
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ps -al | gawk '{print $2,$4}' | grep Z
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}
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get_all_info() {
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get_systatus_info
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echo ${double_line}
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get_service_info
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echo ${double_line}
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get_cpu_info
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echo ${double_line}
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get_net_info
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echo ${double_line}
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get_mem_info
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echo ${double_line}
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get_disk_info
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echo ${double_line}
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get_process_top_info
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echo ${double_line}
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get_sys_user
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}
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main() {
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while [[ 1 ]]
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do
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printMenu
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read option
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local index=$[ ${option} - 1 ]
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case ${options[${index}]} in
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"获取系统信息")
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get_systatus_info ;;
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"获取服务信息")
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get_service_info ;;
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"获取CPU信息")
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get_cpu_info ;;
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"获取系统网络信息")
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get_net_info ;;
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"获取系统内存信息")
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get_mem_info ;;
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"获取系统磁盘信息")
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get_disk_info ;;
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"获取CPU/内存占用TOP10")
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get_process_top_info ;;
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"获取系统用户信息")
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get_sys_user ;;
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"输出所有信息")
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get_all_info > sys.log
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printf "${C_GREEN}信息已经输出到 sys.log 中。${C_RESET}\n\n"
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;;
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"退出")
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exit ;;
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*)
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clear
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echo "抱歉，不支持此选项" ;;
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esac
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done
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}
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######################################## MAIN ########################################
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printHeadInfo
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main
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printFootInfo
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printf "${C_RESET}"
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