this post was submitted on 30 Dec 2023
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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Yes, but for a very specific case. I used to write highly portable scripts that could be executed in different environments (various linux distros, including minimal containers, freebsd and even solaris 10). I couldn't use bash, perl, python and even gawk. Only POSIX shell (I always tested my scripts with dash and ksh93, for solaris 10 compatibility - with its jsh), portable awk (tested with original-awk, gawk and mawk) and portable sed (better forget it if you need to support solaris).
Before that I didn't understand why should I need awk if I know perl. And awk really sucks. Once I had to replace a perl one-liner with an awk script of ~30 lines for portability.
P.S. I never use
awk
just forprint $1
as many do. It's an overkill.cut
is better for this use-case IMO. Awk is good for whencut
won't cut it.