What are my love languages, you ask?

Well, one has to be the making of ad-hoc batch conversion shell scripts using `ffmpeg`.

#lovelanguage #ffmpeg #ShellScripting

#GoingLive! More batteries-forking-included & friends -- CI, unit tests, and more. Bring your questions for the #Programming AMA, come to just #hangout or #cowork. #Python #ShellScripting

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Still working on batteries-forking-included & friends CI and unit test stuff, getting everything back in the green. Come on by with your AMA questions, just to hang out, or to cowork. #GoingLive #Python #Programming #Coworking #AMA #ShellScripting

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Learning #powershell Can me fellow #ShellScripting tooters follow me and I will follow back #boostpls

#UOMF: #Logging With #Emacs #OrgMode
https://karl-voit.at/2020/01/01/appendorgheading/

#publicvoit #PIM #shellscript #ShellScripting #Linux #cron #cronjob

Say, for the sake of argument, you'd like to get a complete listing of a YouTube channel's videos, along with titles and video URLs, plus, for shins'n'grits, the mpv command to play said video at a specified resolution.

That is, you're not downloading the video, but you're getting what you need to create a playlist.

Output might look like, say:

   1  Title: How to write a Philosophy Paper (Basics)
    ID: 5xCx3UkeCh8
    URL: https://yewtu.be/watch?v=5xCx3UkeCh8
    command: mpv --ytdl-raw-options="format=bestvideo[height<=480]+bestaudio" https://yewtu.be/watch?v=5xCx3UkeCh8

Solution: youtube-dl and some gawk:

#!/bin/bash

youtube-dl --get-title --get-id 'https://youtube.com/channel/UC1VzCyqpmCaRh8_BnijbOvg' 2>/dev/null |
    gawk ' {

    # Single and double quotes
    sqo = "\x27"
    dqo = "\x22"
    options = "--ytdl-raw-options=" dqo "format=bestvideo[height<=480]+bestaudio" dqo

    title = $0
    getline;
    id = $1
    url = "https://yewtu.be/watch?v=&quot; id
    mpv_command = "mpv " options " " url


    printf( "%4i  Title: %s\n", ++i, title )
    printf( "    ID: %s\n", id);
    printf( "    URL: %s\n", url )
    printf( "    command: %s\n\n", mpv_command )
    # system (mpv_command)
}'

(This is specific to the Carneades.org channel and a 480p format, season to taste.)

Playlist here was > 3k videos. Runtime was about 40 minutes --- I presume YouTube rate-limit such requests.

Grep and other shell futzing could extract URLs, or simply generate a set of play requests. I'd experimented with running mpv directly from gawk (the "system()" call, commented out), but decided against that in this case.

I could probably get other metadata, such as upload dates and the like, will experiment. There are several youtube-dl features for grabbing metadata and annotations.

#ShellScripting #YoutubeDL #Linux #MacOS #mpv #YouTube

Training Sale: The Mastering Linux Development Bundle from TechRepublic Academy is only $19.99 for a limited time https://buff.ly/3w1ZTZy #training #Linux #ShellScripting #CommandLine #SoftwareDevelopment #KaliLinux #TechRepublic

@mntmn Bash history is written to file when bash terminates normally (e.g., you won't save history on crash), and the most-recently-saved history will overwrite portions of the file.

You can set history size (for both the shell session and the saved file), as well as the history file identity: $HISTSIZE $HISTFILESIZE and $HISTFILE (man bash for more info).

Recent bash versions also save timing information. I'm old-school enough that this is new-fangled and I've not used it.

You can bump HISTSIZE and HISTFILESIZE up. Default is 500, a value of 0 prevents history from being kept. I'll typically bump this up a lot (a few thousand). Set HISTIGNORE for patterns to not save, and HISTCONTROL for further tuning.

$HISTTIMEFORMAT apparently triggers the timing to be saved.

#BASH #ShellScripting #Shell

Intro to Shell scripting https://buff.ly/3qlU1Y7 #Shell #scripting #tools #ShellScripting #Bash #sysadmin #Linux #OpenSource #coding #FOSS

Part of me wonders why I am coding #CliPlayerQueue in plain #Bash rather than in #Python when it's quite likely I'm going to be the only one who'll actually use it. 🤔

I mean, I like #BashScripting / #ShellScripting, but I also think I would save myself a bit of time implementing and looking up of things that either come for free with Python, or in a library.

#coding