Complete Shell Scripting | How to store output of a command into a variable or into a file ?

it will explain about:
How to store any command output into a variable or into a file ?

[Mirb]

I am a programmer already, want to learn shell scripting (syntax ) and after browsing for almost a week finally found a brilliant and satisfactory video series on same . Your way of teaching is great, simple and upto date . But unfortunately as compared to others you don't have that much views, comments, and subscribers, don't understand why.

[bluestone-gamingbg]

Oh my god, that meme about being saved by an Indian tutorial channel is real, thank you very much.
-A Filipino

[sandhyaVenkateswarlu-ez]

Hi, Thanks for the info . I did try running a pyton script whose output is something like 2HP on terminal when i try to read into a variable . it says illegal it cannot start with number . eg: in bash file val=$(python corner.py)
echo "value is $val". this gives me Illegal variable name.

[deepakmahajan]

Hello sir can you tell me script for to check emrackwise and check perticular rack ip ssh connection and print output successfully:235, 236, 238, 231
Unsuccessful:121, 170, 1112 please help

[pavankumar-gcuk]

I need online training for shell scripting and Python scripting,

[asishmaharana]

Can i store only one file name in a variable???

[koushikjana]

Respected sir how to data store file to variable

[ayushgarg]

Please help I am unable to run script command to create transcript. Bash show error message command not found.

[Tvenkib]

How to store query output in a .txt file with unique name(****_datetime.txt), please help

[Mr_GauravAgrawal]

How can we do the same thing in batch file (windows)