ls: Unknown option '-L'. Aborting.

[DeaD3R]

On Amazon Fire HD 10 7th gen (2017), I get this in the console:

ls: Unknown option '-L'. Aborting.

ls: Unknown option '-L'. Aborting.

ls: Unknown option '-L'. Aborting.

and no files or folders listed in the left panel:

ADB is connected and PC is authorized.

Fire runs modified Android 5.1. Could this be old OS issue or FireOS issue?

Also I get same line

ls: Unknown option '-L'. Aborting.

whenever I enter or delete any character in the address bar.

[T0biasCZe]

try opening cmd in the same folder where you download the program and run "adb shell ls /sdcard/"

[DeaD3R]

try opening cmd in the same folder where you download the program and run "adb shell ls /sdcard/"

running that command lists the folders in the internal storage.

Alarms
Android
Books
DCIM
Documents
Download
Movies
Music
Notifications
Pictures
Podcasts
Ringtones
Smart AudioBook Player Backup
Subtitles
kindle

[T0biasCZe]

ok finally got time to get to this, I have basic implementation made, so it "works" on legacy Android devices, however currently it takes lot of time to load a directory* - OK for copying whole DCIM / camera directory, kinda annoying to use for copying few files out of large directory
https://github.com/T0biasCZe/AdbFileManager/releases/tag/beta1.8.0

* explanation: since the -lL doesnt work, i cant use the attributes to quickly check if entry is an folder or a file - so currently its ls-ing every entry it finds, and android returns the file path if the directory is path, so i am currently using that to check if the file is directory - however its slow AF