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“() vs {} bash” Code Answer’s

$() vs `` bash

whatever by GitPaulo

on Oct 01 2021 Comment

$() or `` is called command subsitution

They are the same. Command subsitution allows the output of a command to 
replace the command identifier.

() vs {} bash

whatever by GitPaulo

on Oct 01 2021 Comment

() 
- Placing a list of commands between parentheses causes a subshell environment
to be created, and each of the commands in list to be executed in that subshell.
Since the list is executed in a subshell, variable assignments do not remain 
in effect after the subshell completes.

{}
- Placing a list of commands between curly braces causes the list to be executed
in the current shell context. No subshell is created. The semicolon (or newline)
following list is required.

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