A terminal case of Linux
I have to strongly disagree with "useless use of cat". Using cat first have 3 main advantages making it vastly superior:1. It allows you to drop context quickly and focus on algorithm. You write "cat filename" and you can free your mind and focus on the rest of the pipes. Without cat, you have to keep filename in your mind while you write the first command.2. It puts filename closer to the beginning so when you need to repeat for few more files, you just press home and one Ctrl+right, whereas without cat, you would have to move several times right depending on how many switches first command needed which is always random. Plus most of the back and forth switch editing will be in the first command and filename would just get in the way.3. It works the same for every app. Some apps need file as last parameter, some needs -i, or whatever switch, some use some other random scheme. Cat is always the same.