multi_lines

Multiple Lines

Tuw executes single-line commands on the command prompt (or terminal.)
If you need to run multiple commands, you should merge them into a single line command.
I won't delve into command-line details because it's specific to the command prompt or terminal environment, not Tuw itself.
But you can see some examples for it.

Windows

On windows, you can join the commands with &&.
And some commands like for loop require parentheses ().

{
    // Search json in a folder (Windows)
    "command": "@echo off && (for %%f in (\"%dir%\\*.json\") do (echo %%f)) && echo Done!",
    "button": "Echo!",
    "components": [
        {
            "type": "folder",
            "label": "a folder"
        }
    ]
}

Unix/Linux

On non-Windows platforms, you can join the commands with ;.

{
    // Search json in a folder (Unix/Linux)
    "command": "for f in %dir%/*.json; do echo \"${f}\"; done; echo Done!",
    "button": "Echo!",
    "components": [
        {
            "type": "folder",
            "label": "a folder"
        }
    ]
}