You can perform command substitution by using backticks (`) to surround a command or a dollar sign followed by parenthesis that surround a command. Surrounding a command with backticks is the older style and is being replaced by the dollar sign syntax. You can perform command substitution by using backticks (`) to surround a command or a dollar sign followed by parenthesis that surround a command. Surrounding a command with backticks is the older style and is being replaced by the dollar sign syntax....more
