1 网络 mull ifconfig [root@wangzilong Downloads]# ifconfigeth0 Link encap:Ethernet（封装接口） HWadd
1 网络
mull
ifconfig
[root@wangzilong Downloads]# ifconfigeth0 Link encap:Ethernet（封装接口） HWaddr F0:DE:F1:CF:E2:EE inet addr:172.16.100.18 Bcast:172.16.100.255 Mask:255.255.255.0 inet6 addr: fe80::f2de:f1ff:fecf:e2ee/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500（最大传输单元） Metric:1 RX packets:35025（接收的包） errors:0 dropped:0 overruns:0 frame:0 TX packets:20299 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:19266949 (18.3 MiB) TX bytes:2253024 (2.1 MiB) Interrupt:20 Memory:f2500000-f2520000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:2558 errors:0 dropped:0 overruns:0 frame:0 TX packets:2558 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:195312 (190.7 KiB) TX bytes:195312 (190.7 KiB)wlan0 Link encap:Ethernet HWaddr 10:0B:A9:8D:F0:C4 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)ping
[root@wangzilong ~]# ping www.baidu.comPING www.a.shifen.com (180.97.33.107) 56(84) bytes of data.64 bytes from 180.97.33.107: icmp_seq=1 ttl=53 time=42.3 ms64 bytes from 180.97.33.107: icmp_seq=2 ttl=53 time=42.7 ms^C--- www.a.shifen.com ping statistics ---2 packets transmitted, 2 received, 0% packet loss, time 10594msrtt min/avg/max/mdev = 42.330/42.553/42.777/0.304 ms# 表示拼通
telnet:ip:port
[root@wangzilong ~]# telnet www.baid.com 80Trying 122.10.91.48...Connected to www.baid.com.Escape character is '^]'.^C^CConnection closed by foreign host.#出现Escape character 表示端口畅通常用的端口：
443：https 加密
80：web服务端口
20/21：ftp服务
22：ssh服务
25：smtp
3306：mysql
1521：oracle监听
netstat：通过端口查服务
[root@wangzilong ~]# netstat -anutlp|grep 1521tcp 0 0 :::1521 :::* LISTEN 3122/tnslsnr # 表示查询得知1521是oracle的监听端口查看启动地址：
ll /proc/pid
lsof -p pid
[root@wangzilong ~]# ll /proc/4472total 0dr-xr-xr-x 2 root root 0 Jan 4 10:17 attr-rw-r--r-- 1 root root 0 Jan 4 10:17 autogroup-r-------- 1 root root 0 Jan 4 10:17 auxv-r--r--r-- 1 root root 0 Jan 4 10:17 cgroup--w------- 1 root root 0 Jan 4 10:17 clear_refs-r--r--r-- 1 root root 0 Jan 4 10:17 cmdline-rw-r--r-- 1 root root 0 Jan 4 10:17 comm-rw-r--r-- 1 root root 0 Jan 4 10:17 coredump_filter-r--r--r-- 1 root root 0 Jan 4 10:17 cpusetlrwxrwxrwx 1 root root 0 Jan 4 10:17 cwd -> /root-r-------- 1 root root 0 Jan 4 10:17 environlrwxrwxrwx 1 root root 0 Jan 4 10:17 exe -> /bin/bash # 有exe的就是dr-x------ 2 root root 0 Jan 4 10:07 fddr-x------ 2 root root 0 Jan 4 10:17 fdinfo-r-------- 1 root root 0 Jan 4 10:17 io-rw------- 1 root root 0 Jan 4 10:17 limits-rw-r--r-- 1 root root 0 Jan 4 10:17 loginuid-r--r--r-- 1 root root 0 Jan 4 10:17 maps-rw------- 1 root root 0 Jan 4 10:17 mem-r--r--r-- 1 root root 0 Jan 4 10:17 mountinfo-r--r--r-- 1 root root 0 Jan 4 10:17 mounts-r-------- 1 root root 0 Jan 4 10:17 mountstatsdr-xr-xr-x 6 root root 0 Jan 4 10:17 netdr-x--x--x 2 root root 0 Jan 4 10:17 ns-r--r--r-- 1 root root 0 Jan 4 10:17 numa_maps-rw-r--r-- 1 root root 0 Jan 4 10:17 oom_adj-r--r--r-- 1 root root 0 Jan 4 10:17 oom_score-rw-r--r-- 1 root root 0 Jan 4 10:17 oom_score_adj-r--r--r-- 1 root root 0 Jan 4 10:17 pagemap-r--r--r-- 1 root root 0 Jan 4 10:17 personalitylrwxrwxrwx 1 root root 0 Jan 4 10:17 root -> /-rw-r--r-- 1 root root 0 Jan 4 10:17 sched-r--r--r-- 1 root root 0 Jan 4 10:17 schedstat-r--r--r-- 1 root root 0 Jan 4 10:17 sessionid-r--r--r-- 1 root root 0 Jan 4 10:17 smaps-r--r--r-- 1 root root 0 Jan 4 10:17 stack-r--r--r-- 1 root root 0 Jan 4 10:17 stat-r--r--r-- 1 root root 0 Jan 4 10:17 statm-r--r--r-- 1 root root 0 Jan 4 10:17 status-r--r--r-- 1 root root 0 Jan 4 10:17 syscalldr-xr-xr-x 3 root root 0 Jan 4 10:17 task-r--r--r-- 1 root root 0 Jan 4 10:17 wchan2 cpu
top
uptime
3 内存
free
4 disk
df -h
vmstat
5 综合
iostat
sar
vmstat
dstat
6 系统进程
ps -ef
7 环境变量
printenv
[root@wangzilong ~]# printenvORBIT_SOCKETDIR=/tmp/orbit-rootHOSTNAME=wangzilongIMSETTINGS_INTEGRATE_DESKTOP=yesGIO_LAUNCHED_DESKTOP_FILE_PID=4470TERM=xtermSHELL=/bin/bashXDG_SESSION_COOKIE=8abace0adf0c13df45730ce000000022-1483495484.612039-2115522258HISTSIZE=1000GTK_RC_FILES=/etc/gtk/gtkrc:/root/.gtkrc-1.2-gnome2WINDOWID=54525955QTDIR=/usr/lib64/qt-3.3QTINC=/usr/lib64/qt-3.3/includeIMSETTINGS_MODULE=IBusUSER=rootLS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=01;05;37;41:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.tbz=01;31:*.tbz2=01;31:*.bz=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=01;36:*.au=01;36:*.flac=01;36:*.mid=01;36:*.midi=01;36:*.mka=01;36:*.mp3=01;36:*.mpc=01;36:*.ogg=01;36:*.ra=01;36:*.wav=01;36:*.axa=01;36:*.oga=01;36:*.spx=01;36:*.xspf=01;36:GNOME_KEYRING_SOCKET=/tmp/keyring-CWzJtI/socketSSH_AUTH_SOCK=/tmp/keyring-CWzJtI/socket.sshSESSION_MANAGER=local/unix:@/tmp/.ICE-unix/4048,unix/unix:/tmp/.ICE-unix/4048USERNAME=rootGIO_LAUNCHED_DESKTOP_FILE=/usr/share/applications/gnome-terminal.desktopDESKTOP_SESSION=gnomeMAIL=/var/spool/mail/rootPATH=/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/usr/java/jdk1.8.0_111/bin:/root/binQT_IM_MODULE=ibusPWD=/rootJAVA_HOME=/usr/java/jdk1.8.0_111XMODIFIERS=@im=ibusGDM_KEYBOARD_LAYOUT=usLANG=en_US.UTF-8GNOME_KEYRING_PID=4038GDM_LANG=en_US.UTF-8GDMSESSION=gnomeSSH_ASKPASS=/usr/libexec/openssh/gnome-ssh-askpassHISTCONTROL=ignoredupsHOME=/rootSHLVL=2GNOME_DESKTOP_SESSION_ID=this-is-deprecatedLOGNAME=rootQTLIB=/usr/lib64/qt-3.3/libCVS_RSH=sshCLASSPATH=/usr/java/jdk1.8.0_111/lib/dt.jar:/usr/java/jdk1.8.0_111/lib/tools.jarDBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-0IUkzQUCRk,guid=0bfd76ac415c0b92e190a87200000935LESSOPEN=|/usr/bin/lesspipe.sh %sWINDOWPATH=1DISPLAY=:0.0G_BROKEN_FILENAMES=1XAUTHORITY=/var/run/gdm/auth-for-root-YDta6g/databaseCOLORTERM=gnome-terminal_=/usr/bin/printenv
