When you run a command, or a program tries to make an exec syscall (a special method of the Kernel, how programs are started), the system looks for the file by going through each of the directories in your PATH. Once the program has been found, even if it's in multiple directories, the search is interrupted and the first one found is run.
Directory (computing) - Wikipedia In computing, a directory is a file system cataloging structure which contains references to other computer files, and possibly other directories.On many computers, directories are known as folders, or drawers, analogous to a workbench or the traditional office filing cabinet.. Files are organized by storing related files in the same directory. In a hierarchical file system (that is, one in Shared Libraries On GNU glibc-based systems, including all Linux systems, starting up an ELF binary executable automatically causes the program loader to be loaded and run. On Linux systems, this loader is named /lib/ld-linux.so.X (where X is a version number). This loader, in turn, finds and loads all other shared libraries used by the program. How to Add a Directory to PATH in Linux | Linuxize Jul 29, 2019
Installing Software on Linux¶. One of the most difficult things to get used to in the Linux world is installing new software packages. In the world of Windows, every program comes with a Setup.exe program that asks you some very easy questions and takes care of the job for you. While Linux software can be almost that easy to install, you will sometimes find software that seems to fight every
What is a Directory? - Computer Hope May 21, 2018 Find the correct path to an executable file in Unix
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Apr 10, 2016 Understanding Shared Libraries in Linux Nov 01, 2017 DIRECTORY File (What It Is & How to Open One) Dec 04, 2019