path lookup

Welcome to the world of Linux Bash Command customization! Today, we will delve into an intriguing technique that many Linux users might find handy, especially those who manage numerous applications, different tool versions, or systems with tight security requirements. We will explore how to override the PATH lookup for a command using env -i /absolute/path/to/bin. Q: What does it mean to "override the PATH lookup" for a command? A: In Linux and UNIX-like systems, the PATH is an environmental variable that tells the shell which directories to search for executable files in response to commands issued by a user.