What’s the difference between “dir” and “ls”?
I have compared the man pages of dir and ls and they seem to be exactly the same. Both are part of GNU coreutils and “list directory contents”.
gnu
What is GNU Info for?
I understand what GNU Info is and how to use it, but what is it for? Why does it exist in parallel to the man pages? Why not write detailed man pages rather than provide a separate utility?
What exactly do we mean when we say we are using Linux?
I was going through an article on GNU which goes something like below
What are the main differences between BSD and GNU/Linux userland?
I’ve read a lot on Unix & Linux about BSDs and GNU, etc. But I still don’t understand what some actual, practical differences are between BSD and GNU userlands, despite the fact that they are often mentioned. Can someone elaborate?
sed on OSX insert at a certain line
So I’ve been using ‘sed’ on linux for a while, but have had a bit of difficulty trying to use it on OSX since ‘POSIX sed’ and ‘GNU sed’ have so many little differences. Currently I’m struggling with how to insert a line of text after a certain line number. (in this case, line 4)
Is it possible to run pure GNU?
On the GNU Project webpage, there’s a subsection called “All GNU packages” which lists the various software in the GNU project.
Bash – date, working around the 2038 bug on 32bit LINUX system
I wrote a little bash script that made me stumble across the “Year 2038 Bug”. I did not know about this problem before and I just dare on posting the --debug output I got from date when my script tried to calculate across this magic date (03:14:07 UTC on 19 January 2038).
When and how was the double-dash (–) introduced as an end of options delimiter in Unix/Linux?
I don’t think the shell/utilities in historical Unix nor in something as “recent” as 4.4BSD supported using a double-dash(or two consecutive hyphens) as an end of options delimiter. With FreeBSD, you can see for instance a note introduced in the rm manpages with the 2.2.1 release(1997). But this is just the documentation for one command.
What is the difference between Unix, Linux, BSD and GNU?
GNU is an operating system that is free software—that is, it respects
users’ freedom.
What are the differences between bsdtar and GNU tar?
I’ve always used GNU tar. However, all GNU/Linux distributions that I’ve seen ship bsdtar in their repositories. I’ve even seen it installed by default in some, IIRC. I know for sure that Arch GNU/Linux requires it as a part of basedevel (maybe base, but I’m not sure), as I’ve seen it in PKGBUILDs.