Youtube-dl can use FFmpeg to convert and merge videos after download. But when you do not want to install ffmpeg via homebrew or macports, there is a binary of ffmpeg available under https://evermeet.cx/ffmpeg (found via the official website of ffmpeg).

1. Privileges

Maybe you need to know how to switch the roles in the terminal:

sudo -s admin lets you switch to the admin account, and with

sudo -s you switch to root.

2. Download binaries

Check out https://evermeet.cx/ffmpeg and download the archived binary (i used the release, not the snapshot).

3. Install on system

Move the extracted binary to the local bin path:

mv ffmpeg /usr/local/bin/

And done, youtube-dl should now find ffmpeg and work flawlessly :)

On ArchWiki – System Maintenance, some information on how to clean the filesystem can be found:

1. Delete orphan packages

Check ArchWiki – Pacman/Tips and tricks for more info

Type pacman -Qtdq | pacman -Rns - for recursively removing orphans and their configuration files.

2. Clean the package cache

See ArchWiki – Pacman/Cleaning the package cache for more info

Type paccache -rk1 to delete all cached packages except one (the most current) version.

And Type pacman -Sc to remove all the cached packages that are not currently installed.

While updating via pacman, the computer shut down unexpected, so the update did not finish properly. After this, grub could not boot to the kernel and showed the error:

error: file 'vmlinuz-linux' not found. Loading initial ramdisk ... error: you need to load the kernel first.

Press any key to continue

The solution is to boot arch from an external media (thumbdrive etc.), mount the volumes, change the root and reinstall linux via pacman.

1. Download and make livedisk

The image for archlinux can be downloaded here: https://archlinux.org/download/ (scroll down to country-mirrors for direct download).

To create the bootable drive, check this: https://wiki.archlinux.org/title/USB_flash_installation_medium

1.1 Use mac for livedisk

If using macOS, the linux commands do not work. Important are the following ones:

su $adminUsername to switch to root user in terminal, found here: https://support.apple.com/guide/terminal/enter-administrator-commands-apd5b0b6259-a7d4-4435-947d-0dff528912ba/mac

diskutil list to list all mounted Volumes, found here: https://osxdaily.com/2009/12/01/list-all-mounted-drives-and-their-partitions-from-the-terminal/

diskutil unmountDisk force /dev/disk<#> to force unmount of Volume if it is busy, found here: https://superuser.com/questions/906513/get-rid-of-resource-busy-message-on-mac-os-x

2. Check and mount volumes

Boot arch from livedisk and show all devices via lsblk. Check used partition scheme, e.g.:

/sda1 = 100MB Windows Boot

/sda2 = 250GB Windows

/sda3 = 1.51GB boot

/sda4 = 630GB cryptlvm

/sda6 = 52 GB /

Open cryptvolume with cryptsetup open /dev/sda4 cryptlvm and unlock it with the password.

Mount / and /boot:

mount /dev/mapper/cryptvol-root /mnt

mount /dev/sda3 /mnt/boot

3. Change root and reinstall kernel

Change root to new mount, see https://wiki.archlinux.org/title/Chroot for more info:

arch-chroot /mnt/boot

Reinstall linux-kernel with pacman -Syu linux linux-headers

Maybe first we need to rm /var/lib/pacman/db.lck since pacman did not close correctly, for more info see https://wiki.archlinux.org/title/Pacman#%22Failed_to_init_transaction_(unable_to_lock_database)%22_error

4. Finish update

After this it could also be useful to

mkinitcpio -p linux

grub-mkconfig -o /boot/grub/grub.cfg

And maye restart the pacman update.

This should fix the error and linux should boot without problems anymore. Yay!

Diagnostics

First we should check for more info why tor does not start properly. For this, check systemctl status tor and – if this does not help – journalctl -xe. In the journal, this error appears:

[warn] /var/lib/tor is not owned by this user (root, 0) but by tor (43). Perhaps you are running Tor as the wrong user?

Solution: Run tor.service as user tor

Edit /usr/lib/systemd/system/tor.service and make sure that in the [Service]-section, the User and Group is included:

[Service]

Type=notify

User=tor

Group=tor

NotifyAccess=all

ExecStartPre=/usr/bin/tor -f /etc/tor/torrc —verify-config

Then save tor.service

Reload tor.service and start tor

Reload tor.service with systemctl daemon-reload and try to start it with systemctl start tor.

Tor.service should start without errors, and also nyx should work now. Yay!

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ToDo

1. Learn formatting with markdown according to https://writefreely.org/docs/latest/writer/writing

2. Change theme to dark one according to https://writefreely.org/docs/latest/writer/css

3. Read the Documentation of WriteFreely :) https://writefreely.org/docs/latest/writer

4. Hopefully there I will learn how to default open my blog and not the login page... Et Voilà, changing the default landing page in config.ini works :)

5. Update the about and privacy pages