Some notes on features in Modern PHP.
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Monthly Archives: March 2022
File types In Linux
Today I found myself referring to: File types In Linux/Unix explained in detail. Basically:
- Regular file (-)
- Directory file (d)
- Block file (b)
- Character device file (c)
- Named pipe file or just a pipe file (p)
- Symbolic link file (l)
- Socket file (s)
Also apparently there is a thing called a Door File on Solaris, but, alas, we’re not caring about that.
Quote for the day
I’m reading this and I liked this:
The obvious skill I learned was how to write tests using a fancy testing framework, but the meta-thing I learned which has been even more useful is the fact that writing a test-case generator and a checker is often much more productive than the manual test-case writing that passes for automated testing in most places.
Also good:
It’s not that these books aren’t useful, it’s that almost all of them are written to make sense without any particular background beyond what any random programmer might have, and you can only get so much out of reading your 50th book targeted at random programmers.
Stories
I think stories are so important, but here is a contrary idea: Be suspicious of stories | Tyler Cowen | TEDxMidAtlantic.
Postmodern design
This one turned up in my feed today: There’s More to Design Than Data and Rationality. I feel like the author is discovering postmodernism. It made me realise that when people discover things they have the feeling like they’re the first (but they’re probably not).
Ethernet on ‘trick’
Note to self: I’ve disabled my second NIC enp7s0 for now, I can enable it when its cable arrives.
-------------------
Mon Mar 28 16:34:31 [bash:5.0.17 jobs:0 error:0 time:1505]
root@trick:/home/jj5
# cat /etc/netplan/00-installer-config.yaml
# This is the network config written by 'subiquity'
network:
ethernets:
enp10s0:
addresses:
- 10.3.2.5/16
gateway4: 10.3.1.1
nameservers:
addresses:
- 10.1.1.113
search: []
#enp7s0:
# addresses:
# - 10.1.2.5/16
# nameservers:
# addresses: []
# search: []
version: 2
-------------------
blockdev –getsize64 /dev/sda
Today I learned you can get the size of a block device with e.g.: sudo blockdev --getsize64 /dev/sda
List of PLAYBACK Hardware Devices
Note to self:
------------------- Thu Mar 24 23:58:51 [bash:5.0.17 jobs:0 error:0 time:0] jj5@charm:/home/jj5 $ aplay -l **** List of PLAYBACK Hardware Devices **** card 1: Audio [USB Audio], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Audio [USB Audio], device 1: USB Audio [USB Audio #1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Audio [USB Audio], device 2: USB Audio [USB Audio #2] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Audio [USB Audio], device 3: USB Audio [USB Audio #3] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: HDMI [HDA ATI HDMI], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: HDMI [HDA ATI HDMI], device 8: HDMI 2 [HDMI 2] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: HDMI [HDA ATI HDMI], device 9: HDMI 3 [HDMI 3] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: HDMI [HDA ATI HDMI], device 10: HDMI 4 [HDMI 4] Subdevices: 1/1 Subdevice #0: subdevice #0 -------------------
Stuttering audio on Ubuntu on Asus ROG Strix Z690-F Motherboard
My new computer ‘charm‘ wasn’t playing audio, there was just some incomprehensible and quiet static coming out of the speakers (I was testing with this). I ran this search and found this and ran this:
# apt install libavcodec-dev
Then I edited /etc/modprobe.d/alsa-base.conf and added:
# 2022-03-24 jj5 - SEE: https://askubuntu.com/a/1059492 options snd-hda-intel position_fix=1
And I edited /etc/pulse/default.pa and changed:
# 2022-03-24 jj5 - NEW: load-module module-udev-detect tsched=1 # 2022-03-24 jj5 - OLD: #load-module module-udev-detect
And I edited /etc/pulse/daemon.conf and added this at the end:
; 2022-03-24 jj5 - SEE: https://ubuntuforums.org/showthread.php?t=766860&p=4816308#post4816308 default-sample-rate = 48000 default-fragments = 8 default-fragment-size-msec = 10
I also read this and ran this:
# apt install inxi # inxi -SMA # apt-get install --reinstall alsa-base pulseaudio $ mv ~/.config/pulse ~/.config/pulse.bak
Then after a reboot or two (and enabling USB Audio in BIOS) it started working! Probably didn’t need most of that, but I’m happy to have a solution.
John’s adventures
My recent(ish) adventures:
