So little input, so much output As any regular Unix user can tell you, there are three primary “streams” in which programs are fed and output data. STDIN, which by default is the keyboard. STDOUT, which by default is your terminal/screen, and STDERR, which by default is also your terminal/screen. In addition [...]
This morning someone asked me how to do a relatively simple operation from a Unix shell: Adding a line of text to the beginning of a file. Much to my surprise he asked for help with amazingly complex methods he had tried. Okay everyone, no need to hit this thumbtack with a sledgehammer! Let’s say you have a [...]