Update formatting on the command line notes

Along with some extra updates for a note about GitHub Actions.
This commit is contained in:
Gabriel Arazas 2021-07-10 22:20:08 +08:00
parent 376182f4a4
commit 92a8179dd0
5 changed files with 98 additions and 23 deletions

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:END:
#+title: Command line: BorgBackup
#+date: "2021-05-30 21:40:24 +08:00"
#+date_modified: "2021-06-20 10:02:15 +08:00"
#+date_modified: "2021-07-08 17:56:25 +08:00"
#+language: en
#+property: header_args :eval no
#+property: header_args:bash :results silent :exports code
@ -36,9 +36,9 @@ It can be picky with certain subcommands output being affected from the order of
Borg uses a Git-style command-line interface with subcommands and some common options to choose from.
- You can set the log level of the program with ~--debug~, ~--info~, ~--warning~, ~--error~, and ~--critical~.
- ~-v, --verbose~ - alias for ~--info~
- ~-p, --progress~ - show progress information; will be slower on certain operations due to additional passing of the metadata
- You can set the log level of the program with =--debug=, =--info=, =--warning=, =--error=, and =--critical=.
- =-v, --verbose= - alias for =--info=
- =-p, --progress= - show progress information; will be slower on certain operations due to additional passing of the metadata
Keep in mind, Borg doesn't have global configuration files, only per-repo configurations.
You can create configurations with a little hard work and shell scripts.

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#+title: Command line: FFmpeg
#+date: "2021-05-09 16:40:50 +08:00"
#+date_modified: "2021-06-19 17:43:07 +08:00"
#+date_modified: "2021-07-08 17:52:54 +08:00"
#+language: en
#+property: header-args :eval no
@ -15,17 +15,17 @@ The swiss army knife for interacting with multimedia files (except images becaus
The FFmpeg command line interface is mostly picky because of order.
Whatever options are given will be processed with those options in order.
- ~-hide_banner~ - hide the annoying banner
- ~-loglevel [level] | -v [level]~ - set the verbosity level
- ~-codecs~ - list all codecs
- ~-devices~ - list all devices
- ~-i [file]~ - the input file
- ~c [codec]~ - set the codec
- ~-b [rate]~ - set the bitrate
- ~-o [file]~ - set the output
- =-hide_banner= - hide the annoying banner
- =-loglevel [level] | -v [level]= - set the verbosity level
- =-codecs= - list all codecs
- =-devices= - list all devices
- =-i [file]= - the input file
- =c [codec]= - set the codec
- =-b [rate]= - set the bitrate
- =-o [file]= - set the output
Certain options have the option of specifying whether you're interacting with the audio or video track.
For example, ~-codec:audio~ (~-c:a~) to set the audio codec.
For example, =-codec:audio= (=-c:a=) to set the audio codec.

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#+title: Command line: journalctl
#+date: "2021-05-20 23:07:39 +08:00"
#+date_modified: "2021-06-19 17:43:20 +08:00"
#+date_modified: "2021-07-10 22:19:08 +08:00"
#+language: en
#+property: header-args :results none
@ -16,13 +16,13 @@ For more information, see =journalctl.1= manual page.
* Options
- ~-b, --boot~ - show the logs starting from boot time
- ~-e, --pager-end~ - go to the end of the logs
- ~-f, --follow~ - watch the logs
- ~--user-unit~ - show logs from a user unit
- ~-u, --unit [UNIT]~ - show the logs of a system unit
- ~--vacuum-time=[TIMESPAN]~ - delete logs older than the specified timespan [fn:: View =systemd.time.5= for more information.]
- ~-x, --catalog~ - prints helpful messages such as the documentation URIs
- =-b, --boot= - show the logs starting from boot time
- =-e, --pager-end= - go to the end of the logs
- =-f, --follow= - watch the logs
- =--user-unit= - show logs from a user unit
- =-u, --unit [UNIT]= - show the logs of a system unit
- =--vacuum-time [TIMESPAN]= - delete logs older than the specified timespan [fn:: View =systemd.time.5= for more information.]
- =-x, --catalog= - prints helpful messages such as the documentation URIs

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#+title: Command-line: youtube-dl
#+date: "2021-07-08 17:36:26 +08:00"
#+date_modified: "2021-07-08 19:02:10 +08:00"
#+language: en
#+property: header-args :eval no
One of the archivists' best friends.
At least you don't have to go to those shady YouTube conversion sites anymore when you have a [[https://ytdl-org.github.io/youtube-dl/supportedsites.html][complete list of other video sites]] you can download from.
* Synopsis
#+begin_src shell
youtube-dl [OPTIONS...] [URLS...]
#+end_src
* Options
- =--add-metadata= - add metadata to the resulting file
- =--audio-format [EXTENSION]= - download the video with the select format of "opus", "mp3", "opus", and "vorbis"; but there is also the convenient "best" option
- =--audio-quality [QUALITY]= - quality of the audio from 0 to 9, best to worst respectively; bitrates are also accepted (e.g., =320K=, =1M=)
- =--config-location [PATH]= - set the config to be used; useful for local configs with specific options
- =-F, --list-format= - prints a list of format available for downloading
- =--format [QUALITY]= - download the video with the format shown in =--list-format=; there are convenient options such as =bestaudio= and =bestvideo= referring to the best quality it could find
- =-j, --dump-json= - dry-run and prints in JSON format
- =--no-overwrite= - error if the file already exists which is handy for scripts
- =--write-sub= - writes the subtitle file into disk
- =-x, --extract-audio= - extract only the audio track
* Examples
Here is an entryway into your newfound archiving habit.
Enjoy! :)
** Download the thumbnail and the audio of the video
Very simple.
Very useful as most of the thumbnails can go to high resolution and if you need them for some reason.
#+begin_src shell
youtube-dl --write-thumbnail --extract-audio https://www.youtube.com/watch?v=wy9VvdaLuSs
#+end_src
** Download an entire album
Though, you should look at the supported sites if it supports downloading an album out of the URL.
In this example, we have Bandcamp.
#+begin_src shell
youtube-dl --output '%(title)s.%(ext)s' --format bestaudio https://gametal.bandcamp.com/album/side-quests-vol-3
#+end_src
** Specific video download requirements
In this example, I want to download a video with a width of 1080px and the best video and audio at 320Kbit/s.
Oh, and the video should be in MP4 and the audio in Opus.
This is will only succeed if the format is available to download which you can do with =--list-format=.
#+begin_src shell
youtube-dl --format 'bestvideo[width=1080,ext=mp4]+bestaudio[abr=320K,ext=opus]' https://www.youtube.com/watch?v=wy9VvdaLuSs
#+end_src

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:END:
#+title: GitHub Actions
#+date: "2021-06-20 18:58:48 +08:00"
#+date_modified: "2021-07-05 01:46:35 +08:00"
#+date_modified: "2021-07-07 16:43:41 +08:00"
#+language: en
@ -19,6 +19,7 @@
- each step make uses an action which is basically a script;
it can interact with the repo or do something else entirely without ever touching it
- you can use already defined actions or with your own
- if you want to explore other options, the [[https://github.com/marketplace][GitHub marketplace]] allows searching for various third-party actions