redirect

In Linux shell scripting, managing inputs and outputs efficiently can greatly enhance the functionality and flexibility of your scripts. One interesting feature of Bash is file descriptor manipulation, particularly using exec to manage and redirect output streams. Today, we will explore how to use exec 3>&1 to redirect a subshell's output to a parent's file descriptor (fd). Q&A on Using exec 3>&1 Q1: What is exec in the context of Bash? A1: exec is a built-in Bash command used to execute commands in the current shell environment without creating a new process. When used with redirection, it affects the file descriptors in the current shell.