Bruce Nikkel 1_3_linux_as_platform.pdf

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Cartes-fiches	7
Langue	English
Catégorie	Informatique
Niveau	Université
Crée / Actualisé	20.06.2019 / 02.07.2021
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What are the advantages of FOSS (free and open source software) forensics?

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

Advantages:

No license fees or usage cost
Transparency, can review source code
Can modify / fix (you have the source)
Scripting and automation
good for learning and research
community support can be great

Disadvantages

community support can be horrible
not good compatibility with proprietary file formats
Not always easy to use (lots of command line)
Poor documentation
Volunteers projects might be abandoned
No guarantee "as is", "use at your own risk"

what are some of the common shells used today and what can you do in the shell?

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

Common shells used today:

bash - most popular
zsh - highly customizable
ksh, csh, Bourne(sh) - more traditional UNIX
busybox - emergency shell

You can do a lot in a shell:

execute user commands or shell scripts
manage files, processes
network and system administration
terminal based applications
many GUI programs are just shell frontends

Name 3 file descriptors.

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

stdin - input (0), data into a program
stdout - output (1), data from a program
stderr - error (2), error/debug data from a program

name 4 commands which can be used to pipe data into and out of a program.

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

">" send data from a program to a file (create file if needed)
">>" append data from a program to a file (create if needed)
"<" send data from a file to a program
"|" send data from a program to a program

Name 4 different commands to list hardware

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

lsusb - displaying information about USB busses in the system and the devices connected to them.
lspci - displays information about the PCI busses in the system and the devices connected to them.
lshw (lshw -businfo) - is a small to to extract detailed information on the hardware configuration of the system
lsblk - lists information about all available or the specified block devices.

A block device is a computer data storage device that supports reading and (optionally) wtriting data in fixed-size blocks, sectors, or clusters.

What devices can be found in /dev ?

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

SATA and SCSI are /dev/sda, /dev/sdb, /dev/sdc, ...
NVME is /dev/nvme0n1, /dev/nvme1n1, ...
MMC caards are /dev/mmcblk0, /dev/mmcblk1, ...
Tapes are /dev/st0, /dev/nst0, /dev/st1

Partitions are added to the raw device name

/dev/sda1, /dev/sda2, ...

What tools can be used for digital forensics? (type of tools not specific names)

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

forensic acquisition/analysis developed tools (like TSK)
troubleshooting and diagnostic tools
hacking and pentest tools
tools for repairing corrupt files
tools for extracting or convertiong data
tools for debugging and tracing code
tools for disassembly and decompiling code
tools for searching (grep)

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Bruce Nikkel 1_3_linux_as_platform.pdf

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