BASIC-DOS

A PCjs Retro-Programming Project

BASIC-DOS is on Twitter Project maintained by jeffpar

BASIC-DOS Manual

TREE

TREE [drive:][path] [/F] [/A]

Displays the directories below path (or the current directory), each one connected to its parent by line-drawing characters.

/A uses ASCII characters instead (eg, for a printer)
/F lists each directory’s files, too, before its subdirectories

If there are no subdirectories, TREE displays No subdirectories exist.

TREE C:\ /A
Directory PATH listing for Volume BD-10MB
C:\
+---EXT
+---DEMOS
|   \---WOLF3D
+---SAMPLES
+---SRC
|   +---BOOT
|   |   \---OBJ
|   +---CMD
|   |   \---OBJ
...

If a tree is too wide or too deep for TREE to follow, it lists what it can, then displays Too many subdirectories, and ERRORLEVEL is set to 1. A drive that doesn’t exist displays Invalid drive, and an unknown switch, or a second path, displays Syntax error.

Source: TREE.BAS

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