Self-tutoring about home computer use with Ubuntu Linux: the tutor mentions suspend and hibernate. The following is according to my understanding. A few months back I resurrected this old computer, which is maybe from 2017. Its battery might be weak; …
Self-tutoring about Linux and Bash: the tutor mentions the double asterisk expression. In articles I’ve been consulting about Linux and Github, I’ve been seeing ** in paths. What does **, aka the double asterisk, mean? As I understand, ** is …
Self-tutoring about Ubuntu: the tutor mentions a change he made. To my knowledge, Ubuntu typically comes with Gnome as its desktop. I’ve used Ubuntu for years. This computer is too old to use current Windows, but will still run Ubuntu. …
Self-tutoring about apps for Linux: the tutor mentions the fun one KolourPaint. When Windows works like it’s meant to, it’s awesome. That’s from a Linux fan, even. One strength of Windows is that many of us learned on it. Since …
Self-tutoring about Linux: the tutor mentions braces. On the system I use, { Enter will open up a subshell into which you can enter one command per line, as if in a script file. On the last line I just …
Self-tutoring about [Li|U]nix: the tutor continues about grep capabilities. On the system I use, the + (one or more) operator will work with grep if escaped. With the -E option you don’t have to escape it. Therefore, grep “^t\w\+[.]txt” will …
Self-tutoring about Linux and Unix: Can one use Perl’s amazing regex features with grep? Perhaps some of them: the tutor begins… Perl’s convenient \w and \d work with grep, as-is, on the system I use. Frankly, I’m impressed with what …
[Li|U]nix: grep, part 2: a bit about character classes Read more »
Self-tutoring about Unix: the tutor continues about grep. After reading my post from yesterday, I was in disbelief. I even tried the command there several more times – it works every time. grep isn’t necessarily expected to support alternation – …
Self-tutoring about [Li|U]nix: the tutor begins about grep. grep string filename looks for the string in the file called filename. The string can be a regular expression. In my experience, a regex needs to be quoted. For instance, on the …
Self-tutoring about Unix: the tutor mentions accessing a file name that has non-word characters. Sometimes you’ll look in a directory and you might see a file name such as this(file).txt Yet, if you try to refer to that file in …