网站建设广找金手指排名贰肆,wordpress 百度地图api,重庆专业企业建设网站,食品网站建设项目的预算任何知识都是用进废退#xff0c;有段时间没摸linux#xff0c;这大脑里的知识点仿佛全部消失了#xff0c;就无语。 索性#xff0c;再写一篇记录#xff0c;加强一下记忆#xff0c;下次需要就看自己的资料好了。lsof命令Linux端口查询命令可以通过lsof实现#xff1a…任何知识都是用进废退有段时间没摸linux这大脑里的知识点仿佛全部消失了就无语。 索性再写一篇记录加强一下记忆下次需要就看自己的资料好了。lsof命令Linux端口查询命令可以通过lsof实现lsof : List Open Files的缩写可列出各种进程打开的文件信息如下图所示直接使用lsof 命令得出的是当前所有的信息会有很多因此一般可以通过结合参数来获取更加精确的信息命令的具体参数我们可以通过 --help 命令来查询[rootlocalhost 桌面]# lsof --help
lsof: illegal option character: -
lsof: -e not followed by a file system path: lp
lsof 4.91latest revision: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/latest FAQ: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/FAQlatest man page: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/lsof_manusage: [-?abhKlnNoOPRtUvVX] [|-c c] [|-d s] [D D] [|-E] [|-e s] [|-f[gG]][-F [f]] [-g [s]] [-i [i]] [|-L [l]] [m [m]] [|-M] [-o [o]] [-p s][|-r [t]] [-s [p:s]] [-S [t]] [-T [t]] [-u s] [|-w] [-x [fl]] [--] [names]
Defaults in parentheses; comma-separated set (s) items; dash-separated ranges.-?|-h list help -a AND selections (OR) -b avoid kernel blocks-c c cmd c ^c /c/[bix] c w COMMAND width (9) d s dir s files-d s select by FD set D D dir D tree *SLOW?* |-e s exempt s *RISKY*-i select IPv[46] files -K [i] list|(i)gn tasKs -l list UID numbers-n no host names -N select NFS files -o list file offset-O no overhead *RISKY* -P no port names -R list paRent PID-s list file size -t terse listing -T disable TCP/TPI info-U select Unix socket -v list version info -V verbose search|-w Warnings () -X skip TCPUDP* files -Z Z context [Z]-- end option scan -E display endpoint info E display endpoint info and filesf|-f filesystem or -file names |-f[gG] flaGs -F [f] select fields; -F? for help |-L [l] list () suppress (-) link counts l (0 all; default 0)m [m] use|create mount supplement|-M portMap registration (-) -o o o 0t offset digits (8)-p s exclude(^)|select PIDs -S [t] t second stat timeout (15)-T qs TCP/TPI Q,St (s) info-g [s] exclude(^)|select and print process group IDs-i i select by IPv[46] address: [46][proto][host|addr][:svc_list|port_list]|-r [t[mfmt]] repeat every t seconds (15); until no files, - forever.An optional suffix to t is mfmt; m must separate t from fmt andfmt is an strftime(3) format for the marker line.-s p:s exclude(^)|select protocol (p TCP|UDP) states by name(s).-u s exclude(^)|select login|UID set s-x [fl] cross over d|D File systems or symbolic Linksnames select named files or files on named file systems
Anyone can list all files; /dev warnings disabled; kernel ID check disabled.
[rootlocalhost 桌面]# 常用的结合命令使用的参数有查看某个端口的对应进程 lsof -i:port查看某个协议的某个端口情况lsof -i 协议port:netstat 命令netstat 命令查看网络状态情况netstat --help 查看端口的网络状态情况以及进程信息netstat -a |grep port-a;显示所有的连接的socket ; grep 在返回的信息中查找后面的内容一般通过这个命令就可以查询到之后关键字的进程但是不知道端口的监听情况telnet命令除去以上方法可以确认某端口的情况还可以通过telnet命令去确认某个远程主机上的端口开放情况telnet ip port上图的情况只能确认不能连接但是不能确认到底是主机就已经连不上还是只是端口没开放访问结合ping命令即可确认能ping通不能连上端口就看看端口对应进程启动没有端口号开放没有即可。 端口号开放可参考另一篇https://blog.csdn.net/yeyuningzi/article/details/127546854
