1. #!/usr/bin/env bash
    3. ##############################################################################
    4. # console color
    5. C_RESET="$(tput sgr0)"
    6. C_BLACK="\033[1;30m"
    7. C_RED="\033[1;31m"
    8. C_GREEN="\033[1;32m"
    9. C_YELLOW="\033[1;33m"
    10. C_BLUE="\033[1;34m"
    11. C_PURPLE="\033[1;35m"
    12. C_CYAN="\033[1;36m"
    13. C_WHITE="\033[1;37m"
    14. ##############################################################################
    16. printf "${C_PURPLE}"
    17. cat << EOF
    18. ###################################################################################
    19. # 系统信息检查脚本
    20. ###################################################################################
    21. EOF
    22. printf "${C_RESET}"
    24. [[ $(id -u) -gt 0 ]] && echo "请用root用户执行此脚本！" && exit 1
    25. sysversion=$(rpm -q centos-release | cut -d- -f3)
    26. double_line="==============================================================="
    27. line="----------------------------------------------"
    29. # 打印头部信息
    30. printHeadInfo() {
    31. cat << EOF
    32. +---------------------------------------------------------------------------------+
    33. |                           欢迎使用 【系统信息检查脚本】                          |
    34. +---------------------------------------------------------------------------------+
    35. EOF
    36. }
    38. # 打印尾部信息
    39. printFootInfo() {
    40. cat << EOF
    41. +---------------------------------------------------------------------------------+
    42. |                            脚本执行结束，感谢使用！|
    43. +---------------------------------------------------------------------------------+
    44. EOF
    45. }
    47. 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" )
    48. printMenu() {
    49. printf "${C_BLUE}"
    50. printf "主菜单：\n"
    51. for i in "${!options[@]}"; do
    52. index=`expr ${i} + 1`
    53. val=`expr ${index} % 2`
    54. printf "\t(%02d) %-30s" "${index}" "${options[$i]}"
    55. if [[ ${val} -eq 0 ]]; then
    56. printf "\n"
    57. fi
    58. done
    59. printf "${C_BLUE}请输入需要执行的指令：\n"
    60. printf "${C_RESET}"
    61. }
    63. # 获取系统信息
    64. get_systatus_info() {
    65. sys_os=$(uname -o)
    66. sys_release=$(cat /etc/redhat-release)
    67. sys_kernel=$(uname -r)
    68. sys_hostname=$(hostname)
    69. sys_selinux=$(getenforce)
    70. sys_lang=$(echo $LANG)
    71. sys_lastreboot=$(who -b | awk '{print $3,$4}')
    72. sys_runtime=$(uptime | awk '{print  $3,$4}' | cut -d, -f1)
    73. sys_time=$(date)
    74. sys_load=$(uptime | cut -d: -f5)
    76. cat << EOF
    77. 【系统信息】
    78. 系统: ${sys_os}
    79. 发行版本:   ${sys_release}
    80. 系统内核:   ${sys_kernel}
    81. 主机名:    ${sys_hostname}
    82. selinux状态:  ${sys_selinux}
    83. 系统语言:   ${sys_lang}
    84. 系统当前时间: ${sys_time}
    85. 系统最后重启时间:   ${sys_lastreboot}
    86. 系统运行时间: ${sys_runtime}
    87. 系统负载:   ${sys_load}
    88. EOF
    89. }
    91. # 获取CPU信息
    92. get_cpu_info() {
    93. Physical_CPUs=$(grep "physical id" /proc/cpuinfo | sort | uniq | wc -l)
    94. Virt_CPUs=$(grep "processor" /proc/cpuinfo | wc -l)
    95. CPU_Kernels=$(grep "cores" /proc/cpuinfo | uniq | awk -F ': ' '{print $2}')
    96. CPU_Type=$(grep "model name" /proc/cpuinfo | awk -F ': ' '{print $2}' | sort | uniq)
    97. CPU_Arch=$(uname -m)
    98. cat << EOF
    99. 【CPU信息】
    100. 物理CPU个数:$Physical_CPUs
    101. 逻辑CPU个数:$Virt_CPUs
    102. 每CPU核心数:$CPU_Kernels
    103. CPU型号:$CPU_Type
    104. CPU架构:$CPU_Arch
    105. EOF
    106. }
    108. # 获取服务信息
    109. get_service_info() {
    110. port_listen=$(netstat -lntup | grep -v "Active Internet")
    111. kernel_config=$(sysctl -p 2> /dev/null)
    112. if [[ ${sysversion} -gt 6 ]]; then
    113. service_config=$(systemctl list-unit-files --type=service --state=enabled | grep "enabled")
    114. run_service=$(systemctl list-units --type=service --state=running | grep ".service")
    115. else
    116. service_config=$(/sbin/chkconfig | grep -E ":on|:启用" | column -t)
    117. run_service=$(/sbin/service --status-all | grep -E "running")
    118. fi
    119. cat << EOF
    120. 【服务信息】
    121. ${service_config}
    122. ${line}
    123. 运行的服务:
    124. ${run_service}
    125. ${line}
    126. 监听端口:
    127. ${port_listen}
    128. ${line}
    129. 内核参考配置:
    130. ${kernel_config}
    131. EOF
    132. }
    134. # 获取系统内存信息
    135. get_mem_info() {
    136. check_mem=$(free -m)
    137. MemTotal=$(grep MemTotal /proc/meminfo | awk '{print $2}') #KB
    138. MemFree=$(grep MemFree /proc/meminfo | awk '{print $2}') #KB
    139. let MemUsed=MemTotal-MemFree
    140. MemPercent=$(awk "BEGIN {if($MemTotal==0){printf 100}else{printf \"%.2f\",$MemUsed*100/$MemTotal}}")
    141. report_MemTotal="$((MemTotal/1024))" "MB" #内存总容量(MB)
    142. report_MemFree="$((MemFree/1024))" "MB" #内存剩余(MB)
    143. report_MemUsedPercent=$(free | sed -n '2p' | gawk 'x = int(( $3 / $2 ) * 100) {print x}' | sed 's/$/%/')
    145. cat << EOF
    146. 【内存信息】
    147. 内存总容量(MB): ${report_MemTotal}
    148. 内存剩余量(MB):${report_MemFree}
    149. 内存使用率: ${report_MemUsedPercent}
    150. EOF
    151. }
    153. # 获取系统网络信息
    154. get_net_info() {
    155. pri_ipadd=$(ip addr | awk '/^[0-9]+: / {}; /inet.*global/ {print gensub(/(.*)\/(.*)/, "\\1", "g", $2)}')
    156. pub_ipadd=$(curl ifconfig.me -s)
    157. gateway=$(ip route | grep default | awk '{print $3}')
    158. mac_info=$(ip link | egrep -v "lo" | grep link | awk '{print $2}')
    159. dns_config=$(egrep -v "^$|^#" /etc/resolv.conf)
    160. route_info=$(route -n)
    161. cat << EOF
    162. 【网络信息】
    163. 系统公网地址:${pub_ipadd}
    164. 系统私网地址:${pri_ipadd}
    165. 网关地址:${gateway}
    166. MAC地址:${mac_info}
    167. 路由信息:
    168. ${route_info}
    169. DNS 信息:
    170. ${dns_config}
    171. EOF
    172. }
    174. # 获取系统磁盘信息
    175. get_disk_info() {
    176. disk_info=$(fdisk -l | grep "Disk /dev" | cut -d, -f1)
    177. disk_use=$(df -hTP | awk '$2!="tmpfs"{print}')
    178. disk_percent=$(free | sed -n '2p' | gawk 'x = int(( $3 / $2 ) * 100) {print x}' | sed 's/$/%/')
    179. disk_inode=$(df -hiP | awk '$1!="tmpfs"{print}')
    181. cat << EOF
    182. 【磁盘信息】
    183. ${disk_info}
    184. 磁盘使用: ${disk_use}
    185. 磁盘使用百分比: ${disk_percent}
    186. inode信息: ${disk_inode}
    187. EOF
    188. }
    190. # 获取系统用户信息
    191. get_sys_user() {
    192. login_user=$(awk -F: '{if ($NF=="/bin/bash") print $0}' /etc/passwd)
    193. ssh_config=$(egrep -v "^#|^$" /etc/ssh/sshd_config)
    194. sudo_config=$(egrep -v "^#|^$" /etc/sudoers | grep -v "^Defaults")
    195. host_config=$(egrep -v "^#|^$" /etc/hosts)
    196. crond_config=$(for cronuser in /var/spool/cron/*; do
    197. ls ${cronuser} 2> /dev/null | cut -d/ -f5; egrep -v "^$|^#" ${cronuser} 2> /dev/null;
    198. echo "";
    199. done)
    200. cat << EOF
    201. 【用户信息】
    202. 系统登录用户:
    203. ${login_user}
    204. ${line}
    205. ssh 配置信息:
    206. ${ssh_config}
    207. ${line}
    208. sudo 配置用户:
    209. ${sudo_config}
    210. ${line}
    211. 定时任务配置:
    212. ${crond_config}
    213. ${line}
    214. hosts 信息:
    215. ${host_config}
    216. EOF
    217. }
    219. # 获取CPU/内存占用TOP10
    220. get_process_top_info() {
    222. top_title=$(top -b n1 | head -7 | tail -1)
    223. cpu_top10=$(top -b n1 | head -17 | tail -11)
    224. mem_top10=$(top -b n1 | head -17 | tail -10 | sort -k10 -r)
    226. cat << EOF
    227. 【TOP10】
    228. CPU占用TOP10:
    229. ${cpu_top10}
    230. 内存占用TOP10:
    231. ${top_title}
    232. ${mem_top10}
    233. EOF
    234. }
    236. show_dead_process() {
    237. printf "僵尸进程：\n"
    238. ps -al | gawk '{print $2,$4}' | grep Z
    239. }
    241. get_all_info() {
    242. get_systatus_info
    243. echo ${double_line}
    244. get_service_info
    245. echo ${double_line}
    246. get_cpu_info
    247. echo ${double_line}
    248. get_net_info
    249. echo ${double_line}
    250. get_mem_info
    251. echo ${double_line}
    252. get_disk_info
    253. echo ${double_line}
    254. get_process_top_info
    255. echo ${double_line}
    256. get_sys_user
    257. }
    259. main() {
    260. while [[ 1 ]]
    261. do
    262. printMenu
    263. read option
    264. local index=$[ ${option} - 1 ]
    265. case ${options[${index}]} in
    266. "获取系统信息")
    267. get_systatus_info ;;
    268. "获取服务信息")
    269. get_service_info ;;
    270. "获取CPU信息")
    271. get_cpu_info ;;
    272. "获取系统网络信息")
    273. get_net_info ;;
    274. "获取系统内存信息")
    275. get_mem_info ;;
    276. "获取系统磁盘信息")
    277. get_disk_info ;;
    278. "获取CPU/内存占用TOP10")
    279. get_process_top_info ;;
    280. "获取系统用户信息")
    281. get_sys_user ;;
    282. "输出所有信息")
    283. get_all_info > sys.log
    284. printf "${C_GREEN}信息已经输出到 sys.log 中。${C_RESET}\n\n"
    285. ;;
    286. "退出")
    287. exit ;;
    288. *)
    289. clear
    290. echo "抱歉，不支持此选项" ;;
    291. esac
    292. done
    293. }
    295. ######################################## MAIN ########################################
    296. printHeadInfo
    297. main
    298. printFootInfo
    299. printf "${C_RESET}"