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

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

Get the IP of the host your coming from when logged in remotely
Even faster without the need for cut... :)

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Get AWS temporary credentials ready to export based on a MFA virtual appliance
You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

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

Show a prettified list of nearby wireless APs

check open ports without netstat or lsof

Diff remote webpages using wget

List all Samba user name

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Schedule Nice Background Commands That Won't Die on Logout - Alternative to nohup and at
Check out the usage of 'trap', you may not have seen this one much. This command provides a way to schedule commands at certain times by running them after sleep finishes sleeping. In the example 'sleep 2h' sleeps for 2 hours. What is cool about this command is that it uses the 'trap' builtin bash command to remove the SIGHUP trap that normally exits all processes started by the shell upon logout. The 'trap 1' command then restores the normal SIGHUP behaviour. It also uses the 'nice -n 19' command which causes the sleep process to be run with minimal CPU. Further, it runs all the commands within the 2nd parentheses in the background. This is sweet cuz you can fire off as many of these as you want. Very helpful for shell scripts.

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: