echo command options in linux | Create variables | print variable value using echo

Published: 08 February 2022
on channel: Dikshant (DevOps Guy)

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In this video we discussed the core of linux command, detail about video is described below-:
Agenda-:
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1. echo command-: This command is used to display line of text/string that are passed as an argument .
2. creating variables-: How we can create variables in linux, using echo to print those shell variable
3. System variables-: There are pre defined variable that are already set in linux shell like $SHELL, $PATH etc. How we can see the value using echo and use them
4. EXIT CODE-: This is the concept using that we can check The Last Command/Process run successfully or not and according to that set conditions in shell scripting
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Echo command Use and Options-:

Syntax to use command-: echo [options] [string, variables...]
Use of Command-: Displays text or variables value on screen.

Options
-n Do not output the trailing new line.
-e Enable interpretation of the following backslash escaped characters in the strings:
\a alert (bell)
\b backspace
\c suppress trailing new line
\n new line
\r carriage return
\t horizontal tab
\\ backslash

Managed By - Dikshant Verma (DevOps Engineer)

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