This is a quick guide (mostly notes to myself) about rebooting and starting an app from the command line.

To find the package name, run

adb shell pm list packages -f | grep -i PackageName

In my case, the package is called com.dev47apps.droidcamx

To launch an app from your computer's shell, run

adb shell monkey -p com.dev47apps.droidcamx 1

You can read more about the Android Test Monkey.

Putting it all together in a shell script is as simple as:

adb reboot
sleep 60
adb shell monkey -p com.dev47apps.droidcamx 1

Transform to .flac

FLAC is a good intermediary file format, especially for surround sound files.

avconv -i file.wav out.flac

Transform to .opus

An optional step if you want smaller files. Maximum quality for 6 channel audio.

opusenc --bitrate 4096 out.flac out.opus

Create an .mkv

Add to an MKV with all the chapter information.

mkvmerge -o test.mkv --chapters file.cue out.opus

Split to individual files

Individual MKVs

mkvmerge test.mkv --split chapters:all -o track.mkv

Extract the Audio

One at a time:

mkvextract tracks "track-001.mkv" 0:"individual.opus"

All-In-One bash script

#!/bin/bash
json=$(ffprobe -i "file.mkv" -print_format json -show_chapters -loglevel error)
count=$(echo $json | jq ".chapters | length" )

mkvmerge test.mkv -D -S --split chapters:all -o "%02d.mkv"

COUNTER=1
while [ $COUNTER -le $count ]; do

  printf -v zerotrack "%02d" $COUNTER

  json=$(ffprobe -i "$zerotrack.mkv" -print_format json -show_chapters -loglevel error)
  title=$(echo $json | jq ".chapters[0].tags.title" -r)
  filename="[$zerotrack] $title"

  mkvextract tracks "$zerotrack.mkv" 0:"$filename.opus"
  let COUNTER=COUNTER+1 
done

This bash script moves a top level directory (and all the files and subdirectories under it), to a folder based on the (upper-case) version of the first character of the directory name.

#!/bin/bash
for dir in */ ; do
    start=${dir:0:1}
    mkdir -p ${start^^}
    mv "$dir" ${start^^}
done

Save that as sort.sh, make it executable with chmod +x sort.sh and run with ./sort.sh

It turns this:

.
├── Adella
├── adrianna
├── Barb
├── bebe
├── Carleen
├── catherina

Into:

.
├── A
│   ├── Adella
│   ├── adrianna
├── B
│   ├── Barb
│   └── bebe
├── C
    ├── Carleen
    ├── catherina

How it works

Let's break this down to see what everything does

• for dir in */ ; do
• This loops through the current directory and finds every item which ends with a / - that is, all directories

• start=${dir:0:1}
• Grab a sub-string from the directory name. In this case, the first character.

• mkdir -p ${start^^}
• Make a directory, use the -p flag to make sure we don't get an error when trying to create a duplicate directory. The ^^ command makes things upper case.

• mv "$dir" ${start^^}
• Move the directory we found into the newly created directory.

• done
• Finish the loop

Warnings

• Only works with folders - it won't move any files in your top level directory.
• Non-ASCII characters are supported. For example, 你好 is sorted into 你.
• Handles directories with spaces, punctuation, and numbers at the start.
• No doubt there is some horrific bug lurking in those half-dozen lines. Be a friend and drop me a note in the comments, would you?