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    178 results tagged linux x
    • r/ricing: Desktop customization advice and information
      • https://jie-fang.github.io/blog/basics-of-ricing

      Si j'avais le temps, ca me plairait bien !

      February 10, 2022 at 9:35:39 AM GMT+1 - permalink - archive.org - https://www.reddit.com/r/ricing
      custom desktop linux rice ricing
    • Learn just enough Linux to get things done — petralia

      for beginners ;)

      November 17, 2017 at 8:41:29 AM GMT+1 - permalink - archive.org - http://alexpetralia.com/posts/2017/6/26/learning-linux-bash-to-get-things-done
      linux
    • Which is the fastest method to delete files in Linux

      wtf?

      cd dir
      time perl -e 'for(<*>){((stat)[9]<(unlink))}'

      July 3, 2017 at 4:51:54 PM GMT+2 - permalink - archive.org - http://www.slashroot.in/which-is-the-fastest-method-to-delete-files-in-linux
      delete dir linux perl
    • [Linux] Petite astuce pour une tâche de fond - Liens en vrac de sebsauvage

      nice! (ahah)

      November 16, 2016 at 8:27:38 PM GMT+1 - permalink - archive.org - http://sebsauvage.net/links/?PfISxw
      background linux nice
    • thumbnail
      Using SS tool for network troubleshooting » IT Tips and Tricks

      Keepalive Notes

      A keepalive packet generally has a TCP ACK configured with a sequence number set to one less than the current number used on the connection. Any machine receiving a nudge from such a packet will simply respond with the correct sequence number and, Frankenstein jokes aside, announce that it is indeed alive.

      These types of packets are sometimes empty and generally have three associated parameters. The retry parameter will declare how many times to send a packet before coming to the conclusion that the other end of the connection has given up the ghost. The time setting is configured as the frequency of the checks, and finally the interval dictates the length of time between two sent packets if no response is received.

      Inside the kernel, you can alter these settings by editing these values in the eye-watering pseudo-filesystem known and loved as /proc. One file, in this case, is /proc/sys/net/ipv4/tcp_keepalive_time, and you can edit it

      November 7, 2016 at 3:04:42 PM GMT+1 - permalink - archive.org - https://tipstricks.itmatrix.eu/using-ss-tool-for-network-troubleshooting/
      keepalive linux network
    • thombashi/tcconfig: Simple tc command wrapper. Easy to setup traffic control of network bandwidth/latency/packet-loss to a network interface.
      March 9, 2016 at 10:51:45 AM GMT+1 - permalink - archive.org - https://github.com/thombashi/tcconfig
      linux network qos traffic tt
    • Linux Kernel Module Management 101 | Linux.com

      lsmod
      rmmod
      modprobe

      January 8, 2016 at 11:42:10 AM GMT+1 - permalink - archive.org - https://www.linux.com/learn/tutorials/396770:linux-kernel-module-management-101
      kernel linux module
    • Recommandations de sécurité relatives à un système GNU/Linux | Agence nationale de la sécurité des systèmes d'information

      à feuilleter

      January 5, 2016 at 5:54:05 PM GMT+1 - permalink - archive.org - http://www.ssi.gouv.fr/guide/recommandations-de-securite-relatives-a-un-systeme-gnulinux/
      anssi linux
    • wavemon

      wavemon

      December 20, 2015 at 10:47:47 AM GMT+1 - permalink - archive.org - https://links.infomee.fr/?qLYEYQ
      linux tool wifi
    • doger.io - wow such container
      October 7, 2015 at 2:15:03 PM GMT+2 - permalink - archive.org - http://doger.io/
      container docker linux lxc
    • dstat

      dstat -lrvn 10

      via arnaudb

      September 29, 2015 at 11:18:04 AM GMT+2 - permalink - archive.org - https://links.infomee.fr/?qi1ILw
      htop io linux stat system top
    • avidemux

      edition video sous linux basique

      September 24, 2015 at 6:03:11 PM GMT+2 - permalink - archive.org - https://links.infomee.fr/?-4Pa1w
      linux video virtualdub
    • SysAdvent: So Server, Tell Me About Yourself — An Intro to Facter, Osquery & Sysdig | Puppet Labs
      January 18, 2015 at 2:44:39 PM GMT+1 - permalink - archive.org - https://puppetlabs.com/blog/sysadvent-so-server-tell-me-about-yourself-intro-facter-osquery-sysdig?ls=social-media&ccn=twitter-product-20141222&cid=701G0000000F68P
      debug facter linux osquery sysdig
    • proc(5) — Linux manual pages
      • https://www.kernel.org/doc/Documentation/filesystems/proc.txt
      January 18, 2015 at 2:36:46 PM GMT+1 - permalink - archive.org - http://manpages.courier-mta.org/htmlman5/proc.5.html
      linux proc
    • sysadvent: Day 6 - Debugging for Systems Engineers
      January 18, 2015 at 2:31:41 PM GMT+1 - permalink - archive.org - http://sysadvent.blogspot.fr/2014/12/day-6-debugging-for-systems-engineers.html
      debug linux
    • LINUX System Call Quick Reference
      January 18, 2015 at 2:31:12 PM GMT+1 - permalink - archive.org - http://www.digilife.be/quickreferences/qrc/linux%20system%20call%20quick%20reference.pdf
      call linux system
    • thumbnail
      Top 8 Tools For Linux / Unix Memory Forensics Analysis

      LiME
      Draugr
      Volatilitux
      Memfetch
      Crash utility from Red Hat, Inc
      Memgrep
      Memdump
      foriana

      January 18, 2015 at 2:29:53 PM GMT+1 - permalink - archive.org - http://www.cyberciti.biz/programming/linux-memory-forensics-analysis-tools/
      debug linux memory
    • What are useful command-line network monitors on Linux - Xmodulo

      plein d'outils network linux

      • nload

      via arnaub

      January 10, 2015 at 10:45:34 AM GMT+1 - permalink - archive.org - http://xmodulo.com/useful-command-line-network-monitors-linux.html
      linux network
    • Linux Tune Network Stack (Buffers Size) To Increase Networking Performance
      January 1, 2015 at 3:14:00 PM GMT+1 - permalink - archive.org - http://www.cyberciti.biz/faq/linux-tcp-tuning/
      linux sysctl
    • Un peu de réseau et de debug udp
      Prenons une application ouvre une socket UDP : pour chaque paquet qui arrive, elle va le traiter et passer au suivant. Si le traitement est plus cours que la cadence de reception, tout va bien, on peut travailler en "flux tendu". Pour éviter de perdre des paquets si l'application est trop lente, le kernel entretien des buffers qui ont une taille par defaut et une taille max.

      Pour consulter :
      # sysctl net.core.rmem_default
      # sysctl net.core.rmem_max
      # sysctl net.ipv4.udp_mem
      # net.core.netdev_max_backlog


      En cas de probleme, on peut augmenter la taille de ce buffer. (temporairement avec commande ou /proc/... et définitivement avec /etc/systcl.d/
      sysctl -w net.core.rmem_default=20000000
      sysctl -w net.core.rmem_max=30000000
      sysctl -w net.ipv4.udp_mem='262144 327680 393216'
      sysctl -w net.core.netdev_max_backlog=2000



      Comment savoir qu'on a des drop udp ?

      netstat -su

      Sinon il y a /proc/net/udp qui contient une ligne par socket udp avec le port (attention en hexadecimal), la taille du buffer utilisé, (s'inquiéter si rxqueue est différent de zéro) et enfin la dernière colonne, les drops !

      alors si vous avez des drops, il faut revoir l'application,.
      Augmenter la taille du buffer est utile seulement si ces drops sont du à des "burst" (des pics d'activité qui n'arrivent pas souvent), un plus grand buffer permettra d'absorber ces pics !


      En encore plus interactif : netstat -c --udp -an

      todo : trouver les commandes équivalentes avec ss

      https://github.com/etsy/statsd/issues/318
      https://www.assembla.com/spaces/LogZillaWiki/wiki/UDP_Buffers
      http://answers.splunk.com/answers/7001/udp-drops-on-linux.html
      December 10, 2014 at 3:51:28 PM GMT+1 * - permalink - archive.org - https://links.infomee.fr/?AyHsGA
      drop kernel linux network networking reseau udp
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