/lib

The /lib directory in a Linux system contains essential libraries—collections of pre-written code—that programs use to perform common tasks. Think of these libraries as toolkits that multiple programs can share, reducing redundancy and improving efficiency. When a program runs, it accesses these libraries to handle things like reading files, connecting to networks, or displaying graphics. Having /lib organized this way helps ensure that core functions are consistent and easily maintained across the system, making the operating system more stable and reliable.