Commands matching netstat (162)

  • Network Interfaces


    -3
    netstat -ie
    minigeek · 2012-08-07 01:57:49 3
  • Monitor Applications application that are connected/new connections

    The -p parameter tell the netstat to display the PID and name of the program to which each socket belongs or in digestible terms list the program using the net.Hope you know what pipe symbol means! Presently we wish to only moniter tcp connections so we ask grep to scan for string tcp, now from the op of grep tcp we further scan for regular expression /[a-z]*. Wonder what that means ? If we look at the op of netstat -p we can see that the name of the application is preceded by a / ( try netstat -p ) so,now i assume application name contains only characters a to z (usually this is the case) hope now it makes some sense.Regular expression /[a-z]* means to scan a string that start with a / and contains zero or more characters from the range a-z !!. Foof .. is t Show Sample Output


    -4
    while true; do netstat -p |grep "tcp"|grep --color=always "/[a-z]*";sleep 1;done
    buffer · 2009-07-16 04:52:49 7
  • Polls fos network port usage


    -4
    while sleep 1; do date; (netstat -a -n | grep 80) ; done
    hute37 · 2011-05-16 07:56:56 5
  • netstat with group by (ip adress)

    netstat has two lines of headers: Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State Added a filter in the awk command to remove them


    -4
    netstat -ntu | awk ' $5 ~ /^[0-9]/ {print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
    letterj · 2011-07-04 20:23:21 8
  • netstat -p recoded (totaly useless..)

    Ok so it's rellay useless line and I sorry for that, furthermore that's nothing optimized at all... At the beginning I didn't managed by using netstat -p to print out which process was handling that open port 4444, I realize at the end I was not root and security restrictions applied ;p It's nevertheless a (good ?) way to see how ps(tree) works, as it acts exactly the same way by reading in /proc So for a specific port, this line returns the calling command line of every thread that handle the associated socket


    -5
    p=$(netstat -nate 2>/dev/null | awk '/LISTEN/ {gsub (/.*:/, "", $4); if ($4 == "4444") {print $8}}'); for i in $(ls /proc/|grep "^[1-9]"); do [[ $(ls -l /proc/$i/fd/|grep socket|sed -e 's|.*\[\(.*\)\]|\1|'|grep $p) ]] && cat /proc/$i/cmdline && echo; done
    j0rn · 2009-04-30 12:39:48 630
  • Kill a daemon by name, not by PID

    Just find out the daemon with $ netstat -atulpe. Then type in his name and he gets the SIGTERM.


    -5
    kill_daemon() { echo "Daemon?"; read dm; kill -15 $(netstat -atulpe | grep $dm | cut -d '/' -f1 | awk '{print $9}') }; alias kd='kill_daemon
    P17 · 2009-05-26 20:39:56 7
  • Equivalent to ifconfig -a in HPUX

    HP UX doesn't have a -a switch in the ifconfig command. This line emulates the same result shown in Solaris, AIX or Linux Show Sample Output


    -5
    for i in `netstat -rn |grep lan |cut -c55-60 |sort |uniq`; do ifconfig $i; done
    Kaio · 2010-01-28 17:35:20 5
  • Prints tcp and udp connections


    -5
    netstat -nlput
    techie · 2013-05-09 08:15:04 5
  • See a list of ports running


    -6
    netstat -an | grep -i listen
    lfcipriani · 2009-03-27 13:19:29 9
  • Informations sur les connexions reseau

    Affiche des infos detaillees sur vos connexions reseaux. Port en ?coute, protocole, paquets, adresses, ustilisateur, PID etc...


    -8
    netstat -taupe
    farwarx · 2009-05-25 12:46:38 5
  • netstat -luntp


    -8
    netstat -luntp
    lunarblu · 2010-04-14 19:54:17 18
  • عرض اتصالات لبورت محدد

    عرض الاتصالات لبورت ٢٢


    -16
    netstat -antp | grep 22
    WhiteHatsCom · 2010-08-05 15:53:41 9
  • ‹ First  < 5 6 7

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drop first column of output by piping to this

Lists all listening ports together with the PID of the associated process
This command is more portable than it's cousin netstat. It works well on all the BSDs, GNU/Linux, AIX and Mac OS X. You won't find lsof by default on Solaris or HPUX by default, but packages exist around the web for installation, if needed, and the command works as shown. This is the most portable command I can find that lists listening ports and their associated pid.

Get list of servers with a specific port open
Change the -p argument for the port number. See "man nmap" for different ways to specify address ranges.

Detect illegal access to kernel space, potentially useful for Meltdown detection
Based on capsule8 agent examples, not rigorously tested

List only directories, one per line
Alternatively, $ ls -F | grep /\$ but will break on directories containing newlines. Or the safe, POSIX sh way (but will miss dotfiles): $ for i in *; do test -d "./$i" && printf "%s\n" "$i"; done

Force the script to be started as root
Will run the script as root and exit if the wrong or no password is given. Also will keep the parameters active if any where given.

Create and access directory at the same time
The previous alternative dont work (the cd command was missing).

history autocompletion with arrow keys
This will enable the possibility to navigate in the history of the command you type with the arrow keys, example "na" and the arrow will give all command starting by na in the history.You can add these lines to your .bashrc (without &&) to use that in your default terminal.

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Empty Bind9 cache
Occasionally, to force zone updating, cache flush is necessary. The use of this command is better than restart the Bind9 process.

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