Alright, it's Wednesday. What is something you have learned *new* about Linux within the past 7 days?

TorC · 12-23-2020, 05:03 PM

The 'Hidden' Cost of Using ZFS for Your Home NAS

Discovering ZFS -- Pros and Cons

ondoho · 12-24-2020, 11:00 AM

Quote:

Originally Posted by enorbet

I'm only beginning to learn the incredible power of "fzf"....

Hail fzf! Like dmenu on steroids, lol. Only for the terminal.

jmgibson1981 · 12-27-2020, 05:18 PM

I've avoided compiling anything like the plague for the last few years. Never looked into it because I had read somewhere that it could potentially overwrite system files or libs via the make install process. I only today learned from another thread that I can compile to a specific directory. In this case the person suggested /opt as the prefix.

Suffice to say this opens up more options to me in regards to distro choice.

ondoho · 12-28-2020, 02:42 AM

^ Haha, yes, sometimes obstacles just fall away when you let things rest for a few years.

dugan · 12-29-2020, 06:04 PM

Learned about pam_ssh_agent_auth and SSH forwarding.

hazel · 01-11-2021, 09:23 AM

Today I discovered that you can concatenate .wav files. My church has moved online again, thanks to the latest lockdown, and I had a reading to do for next Sunday's service. After recording it with arecord, I played it back and realised with annoyance that I had omitted the formal ending (This is the word of the Lord. Thanks be to God). As the recording sounded pretty good otherwise, I decided not to re-record it but to record the ending by itself and see if appending it with cat would work.

It worked very well. There was a pause and a small click where the two recordings were joined but I'm sure the guy who puts the service together can edit that out.

GPGAgent · 01-11-2021, 09:51 AM

Quote:

Originally Posted by hazel

Today I discovered that you can concatenate .wav files. My church has moved online again, thanks to the latest lockdown, and I had a reading to do for next Sunday's service. After recording it with arecord, I played it back and realised with annoyance that I had omitted the formal ending (This is the word of the Lord. Thanks be to God). As the recording sounded pretty good otherwise, I decided not to re-record it but to record the ending by itself and see if appending it with cat would work.

It worked very well. There was a pause and a small click where the two recordings were joined but I'm sure the guy who puts the service together can edit that out.

yesterday I tried the same and learned that sox is designed to do this

Code:

sox file1.wav file2.wav fileout.wav

check out everthing else sox can do with man sox

Code:

SoX(1)                          Sound eXchange                          SoX(1)

NAME
       SoX - Sound eXchange, the Swiss Army knife of audio manipulation

SYNOPSIS
       sox [global-options] [format-options] infile1
            [[format-options] infile2] ... [format-options] outfile
            [effect [effect-options]] ...

       play [global-options] [format-options] infile1
            [[format-options] infile2] ... [format-options]
            [effect [effect-options]] ...

       rec [global-options] [format-options] outfile
            [effect [effect-options]] ...

DESCRIPTION
   Introduction
       SoX  reads  and  writes audio files in most popular formats and can op‐
       tionally apply effects to them. It can combine multiple input  sources,
       synthesise  audio, and, on many systems, act as a general purpose audio
       player or a multi-track audio recorder. It also has limited ability  to
       split the input into multiple output files.

jsbjsb001 · 01-13-2021, 03:19 AM

Why does it have to be Wednesday? What's so special about Wednesday?

I'd think as long as you learnt something, it wouldn't matter what day of the week it is - it certainly doesn't matter to me personally FWIW.

In any case, and while I have no idea what day it was, and while it wasn't within the last 7 days; I learnt how to build the kernel myself, and after a few try's finally got it to build and boot. I was meaning to learn that for a long time now, but I was just too lazy to try it until last year. Although, I have compiled many other things well before learning that though.

BTW, I have to agree with boughtonp in post #2; there's no need whatsoever to have multiple threads asking the same question - it's just pointless.

PS: Why not just start a thread called something like: "What have you learnt about Linux?"? Then you don't need to start a new thread for the next 7 days.

hazel · 01-13-2021, 05:32 AM

Quote:

Originally Posted by jsbjsb001

Why does it have to be Wednesday? What's so special about Wednesday?

The thread was started on a Wednesday, that's all. No one cares about the title any more.

Quote:

PS: Why not just start a thread called something like: "What have you learnt about Linux?"? Then you don't need to start a new thread for the next 7 days.

Because we already have this one and it's been going for weeks now.

jsbjsb001 · 01-13-2021, 08:52 AM

Quote:

Originally Posted by hazel

...
Because we already have this one and it's been going for weeks now.

Maybe I should have been clearer, as it seems I wasn't clear enough... I wasn't asking them to start yet another thread; I was saying they could have saved themselves the trouble in the first place of putting some arbitrary time limit on their original thread if they had titled it something similar to what I said above.

jeremy · 01-13-2021, 12:17 PM

This is a great idea, KGIII - thanks for starting! I've created a long lived sticky in the Linux - General forum (as the topic is Linux related).

https://www.linuxquestions.org/quest...ys-4175688500/

--jeremy

enorbet · 01-14-2021, 12:08 AM

Today I discovered a great app for a specific purpose - discovering exactly what is chewing up storage space. "Filelight" examines whatever drive or partition you choose and produces a color-coded circular graph displaying the real estate usage and a mouseover function tells you what directories and files are involved.

boughtonp · 01-14-2021, 07:08 AM

Quote:

Originally Posted by enorbet

Today I discovered a great app for a specific purpose - discovering exactly what is chewing up storage space. "Filelight" examines whatever drive or partition you choose and produces a color-coded circular graph displaying the real estate usage and a mouseover function tells you what directories and files are involved.

How configurable is it, because based on the this page it looks crap?

All I want is someone to clone OverDisk exactly - it's nice that the radial/sunburst display has finally caught on, but so far everything disappoints me.

enorbet · 01-14-2021, 08:11 AM

Quote:

Originally Posted by boughtonp

How configurable is it, because based on the this page it looks crap?

All I want is someone to clone OverDisk exactly - it's nice that the radial/sunburst display has finally caught on, but so far everything disappoints me.

I don't know what you want that it doesn't deliver but all I wanted was a few things.... basically what was most responsible for storage usage with an eye toward determining such common issues as /var and /tmp growing like a tumor or even if I had either forgotten a backup after it's usefulness or inadvertently copied some massive directory. In a matter of minutes Filelight led me to recover over 400GB of free space, so it worked for what I needed. This is especially complicated and important to me because I commonly have 5-10 working operating systems on 10TB storage on my Main.

Frankly even if Overdisk is objectively somehow "better", to me, no amount of "better" for some app is worth running Win 10. I'd rather do without.

teckk · 01-14-2021, 09:08 AM

I looked at that, that's nifty.
https://github.com/KDE/filelight