Linux

48376 readers

1886 users here now

From Wikipedia, the free encyclopedia

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.

Rules

Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
No misinformation
No NSFW content
No hate speech, bigotry, etc

Related Communities

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

founded 5 years ago

MODERATORS

AgreeableLandscape@lemmy.ml

nooter692@lemmy.ml

MarcellusDrum@lemmy.ml

cypherpunks@lemmy.ml

cyclohexane@lemmy.ml

d3Xt3r@lemmy.nz

GNU BRE/ERE cheatsheet and differences between grep, sed and awk (learnbyexample.github.io)

submitted 9 hours ago by learnbyexample@programming.dev to c/linux@lemmy.ml

2 comments fedilink hide all child comments

top 2 comments

sorted by: hot top controversial new old

[–] acockworkorange@mander.xyz 3 points 2 hours ago* (last edited 2 hours ago) (1 children)

sed requires both ( and )characters to be escaped (in ERE mode), whereas grep and awkdon't require ) to be escaped.

sed requires { to be escaped (in ERE mode) even if it isn't part of a valid quantifier syntax, whereas grep and awk don't require escaping. For example, you'd need \{a} in sed whereas {a} is enough for the other two.

In BRE mode, grep and sed don't require ^ and $ to be escaped if they are used away from their customary positions.

Fuck that.

Edit: I’m not complaining about the the page, it looks nice and polished. It’s the inconsistencies among the GNU tools in handling regex that grind me.

[–] Badabinski@kbin.earth 3 points 43 minutes ago

Yeah, every now and then I take a step back and say "what the fuck did they build?" when dealing with some of the GNU tools. Twenty minutes later I'll start complaining about how the BSD version of something from coreutils lacks a GNU argument that would make my life about 83% easier.

It's like a sick sort of Stockholm Syndrome. I do genuinely like GNU coreutils, but there's some baffling shit present.