Hiding and deleting history on Linux systems - how the hackers hide their actions from you

Hiding and deleting history on Linux systems - CLI 50 - how the hackers hide their actions from you

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Difficulty Level: Intermediate
Prerequisites: basic understanding of linux command line
basic understanding of command line history

In this video, we will look at the command history in the bash shell. There is the command history that is kept in memory and then there is the history file that is written out from memory. This video will cover turning off, clearing, and deleting command line history from both artifacts.


**********************************************************************
* This video is purely for educational purposes only. *
* Malicious hacking is not encouraged or condoned. *
* Do not hack machines that you do not have authorization to access. *
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Video timeline
00:00 intro
01:33 Legit reasons to manipulate history log
02:12 history in memory - log clearing, line deletions, lines that dont get recorded
06:35 history log file - changing and deleting
08:29 Shell environments that control history
09:04 $HISTFILE - location of history file
11:18 $HISTSIZE - number of entries in command history in memory
12:10 $HISTFILESIZE - number of entries in history log
13:08 $HISTCONTROL - ignoring duplicates, ignoring commands with leading space
14:55 Shel options - set -o, set +o
16:35 Shel options - shopt -os, shopt -ou



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CAINE  linux (http://www.caine-live.net)

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