Notes on Samarthya

Notes: For self

Wed, 23 Feb 2022 07:27:42 +0000

Bash is a string oriented language
We do not write step=$((step++)) this expression will return a numeric value which the shell will then take as the command to to be executed.
No spaces are allowed around the equal sign for variable assignment.
let "step++" is same as (( step++ ))
Use declare to set variable values and attributes

In bash = and == both mean the same thing

💬 What is the difference between [ and [[?

•
if cd $dir; then
In this case the command cd $dir will be executed and based on success or failure of the command executed the if or else part will be executed respectively.
if [$dir]; then
```
<span
 class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none">
 <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#if-dir-then" aria-label="Anchor">#</a>
</span>
```
Single bracket is equivalent to test command evaluate conditional expression
1. •
  < & >
  - Within [ compare using simple ASCII ordering & within [[ comparison is lexicographic.
  - Within [ you have to escape \> to avoid redirection.

💬 BC is a language?

 <span></span>
</span>
<span class="accordion-chevron ms-auto flex h-5 w-5 items-center justify-center print:hidden">
 <span class="relative block icon"><svg

xmlns=“http://www.w3.org/2000/svg" viewBox=“0 0 20 20” fill=“currentColor” aria-hidden=“true”

💬 Supports arbitrary precision numbers with interactive execution of statements. (Command line)

awk provides filtering capabilities

> printf 'gate\napple\nwhat\nkite\n' | awk '/at/'

gate
what

printf 'gate\napple\nwhat\nkite\n' | awk '!/e/'

what

awk is primarily used for field based processing

One liner structure awk 'cond1{action1} cond2{action2} … condN{actionN}'

ISG: Information security governance

Thu, 20 May 2021 12:00:00 +0000

Rules that run the organisation = Governance. ISG includes the element required to provide the Senior Management assurance that its direction and intent are reflected in the security posture of the organisation.

CISSP: Next target

Sat, 06 Mar 2021 18:08:34 +0000

I just finished my upgrade to Safe Certification and now will be going for CISSP certification. Wish my luck guys!

Some quotes
#

Effective security plans anticipates change, focuses on specific and achievable objectives, potential problems, and serves as the basis of decision making.
Operational plans are the shortest and most frequently updated
Tactical plans are mid term plans and supports strategical plans.
Strategic plans are the long term plans (usually 5 years) and usually includes risk assessment.
Data classification is the primary means by which data is protected based on its need for secrecy, sensitivity and confidentiality.
Data classification is the process of organizing objects, subjects, items into groups of similarities (value, cost, vulnerability, risk, power, privilege)
Stratify the process of organizing and securing data based on assigned labels of importance and sensitivity.
Data classification also addresses how data is removed and destroyed.
Security policy is used to assign responsibilities, define acceptable risks, define roles, specify audit requirements and indicate compliance.
Security policy are not optional rather mandatory.
Three types of security policies are regulatory, advisory and informative.

Notes on Samarthya

Notes: For self

if cd $dir; then

if [$dir]; then <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#if-dir-then" aria-label="Anchor">#</a> </span>

< & >

ISG: Information security governance

CISSP: Next target

Some quotes #

`if [$dir]; then`

`<span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#if-dir-then" aria-label="Anchor">#</a> </span>`

Some quotes
#