bash.md

Bash

distinguish from "${}" and "$()"

https://tecadmin.net/difference-between-parameter-expansion-and-command-substitution-in-bash/#:~:text=The%20%24%7B%7D%20syntax%20in%20Bash,variable%20name%20or%20an%20expression.

While "${}" is used for parameter expansion and variable manipulation, "$()" is utilized for command substitution, allowing the execution of commands and substitution of their output.