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06.23.2011, Linux, by .

# 查看内核/操作系统/CPU信息
# uname -a
#cat /proc/version
# 查看Linux版本
# lsb_release -a
# cat /etc/issue
# cat /etc/*release*

# cat /proc/cpuinfo # 查看CPU信息
# hostname # 查看计算机名
# lspci -tv # 列出所有PCI设备
# lsusb -tv # 列出所有USB设备
# lsmod # 列出加载的内核模块
# env # 查看环境变量


# free -m                       # 查看内存使用量和交换区使用量
# df -h                         # 查看各分区使用情况
# du -sh <目录名>                # 查看指定目录的大小
# grep MemTotal /proc/meminfo   # 查看内存总量
# grep MemFree /proc/meminfo    # 查看空闲内存量
# uptime                        # 查看系统运行时间、用户数、负载
# cat /proc/loadavg             # 查看系统负载


# mount | column -t      # 查看挂接的分区状态
# fdisk -l               # 查看所有分区
# swapon -s              # 查看所有交换分区
# hdparm -i /dev/hda     # 查看磁盘参数(仅适用于IDE设备)
# dmesg | grep IDE       # 查看启动时IDE设备检测状况


# ifconfig               # 查看所有网络接口的属性
# iptables -L            # 查看防火墙设置
# route -n               # 查看路由表
# netstat -lntp          # 查看所有监听端口
# netstat -antp          # 查看所有已经建立的连接
# netstat -s             # 查看网络统计信息

netstat -nat|grep -i “80″|wc -l


netstat -ntu | awk ‘{print $5}’ | cut -d: -f1 | sort | uniq -c | sort -n


netstat -nat |awk ‘{print $6}’|sort|uniq -c|sort -rn
netstat -n | awk ‘/^tcp/ {++S[$NF]};END {for(a in S) print a, S[a]}’
netstat -n | awk ‘/^tcp/ {++state[$NF]}; END {for(key in state) print key,”\t”,state[key]}’
netstat -n | awk ‘/^tcp/ {++arr[$NF]};END {for(k in arr) print k,”\t”,arr[k]}’
netstat -n |awk ‘/^tcp/ {print $NF}’|sort|uniq -c|sort -rn
netstat -ant | awk ‘{print $NF}’ | grep -v ‘[a-z]‘ | sort | uniq -c


netstat -anlp|grep 80|grep tcp|awk ‘{print $5}’|awk -F: ‘{print $1}’|sort|uniq -c|sort -nr|head -n20
netstat -ant |awk ‘/:80/{split($5,ip,”:”);++A[ip[1]]}END{for(i in A) print A,i}’ |sort -rn|head -n20


tcpdump -i eth0 -tnn dst port 80 -c 1000 | awk -F”.” ‘{print $1″.”$2″.”$3″.”$4}’ | sort | uniq -c | sort -nr |head -20


netstat -n|grep TIME_WAIT|awk ‘{print $5}’|sort|uniq -c|sort -rn|head -n20


netstat -an | grep SYN | awk ‘{print $5}’ | awk -F: ‘{print $1}’ | sort | uniq -c | sort -nr | more


# ps -ef                 # 查看所有进程
# top                    # 实时显示进程状态


# w                         # 查看活动用户
# id <用户名>                # 查看指定用户信息
# last                      # 查看用户登录日志
# cut -d: -f1 /etc/passwd   # 查看系统所有用户
# cut -d: -f1 /etc/group    # 查看系统所有组
# crontab -l                # 查看当前用户的计划任务


# chkconfig --list              # 列出所有系统服务
# chkconfig --list | grep on    # 列出所有启动的系统服务


# rpm -qa                # 查看所有安装的软件包

【收录】Linux系统信息查看命令大全 有 71 条回应

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