Remove all the lines that contain the character `a' in a file and write it to another file
Text files are widely used for storing data and information in various fields such as computer science, engineering, healthcare, finance, etc. However, sometimes it is necessary to remove certain lines that contain specific strings or patterns from a text file. This task can be accomplished easily using various programming languages such as Python, Perl, Bash, etc. In this article, we will focus on how to delete lines in a text file that contain a specific string.