Bash, a versatile command language, facilitates numerous file-processing operations, such as reading, writing, and piping data to other programs, which are essential in shell scripting, text processing, and automating administrative tasks. It allows users to read files line by line using the read command within a while loop, utilize custom delimiters through the Internal Field Separator (IFS), and handle user prompts and variable assignments efficiently. The article also explores additional file-reading options, including commands like cat, nl, head, and tail, which are valuable for viewing and manipulating file data. Bash's capabilities extend to working with empty lines, caching long-running functions, and integrating with other tools to enhance software build processes. The piece highlights Earthly, a platform that optimizes builds with caching mechanisms and offers a syntax for defining parallelizable and cacheable builds, suggesting its utility in modern software development workflows.