Concatenating files with cat
This article is a continuation on a series about GNU text utilities. It takes a look at cat -- the command that UNIX lovers love to love, and UNIX haters love to hate. Often you need to process several files as one and save the results of such processing to a single output file. The cat (short for "concatenate") command takes one or more files on its input and prints them to its output as a single file. For example, cat chapter01 chapter02 chapter03 > book saves three chapterXX files into a single book file.
