() vs {} bash
()
- 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.$() vs `` bash
$() or `` is called command subsitution
They are the same. Command subsitution allows the output of a command to
replace the command identifier.bash vs shell
there are different type of shells .. bash , cshCopyright © 2021 Codeinu
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