tcb fn env pull

Export the environment variables of a deployed function to a local file.

Prerequisites

• tcb login has been completed and the function is deployed.
• The output file path is known. --output-file is required.

Usage

tcb fn env pull <name> --output-file <file> [options]

Flags

Flag	Required	Description	Default
<name>	Yes	Function name	—
--output-file <file>	Yes	Output file path, such as .env.local	—
-e, --env-id <envId>	No	Environment ID	Selected interactively when omitted
--json	No	Output the result as JSON	—

Examples

# Export to .env
tcb fn env pull app --output-file .env

# Export to .env.local with an explicit environment
tcb fn env pull app --output-file .env.local --env-id env-xxxx

# Export to a specific directory and print the result as JSON
tcb fn env pull app --output-file ./configs/dev.env --json

Response

The exported file uses KEY=value format, with newlines and double quotes escaped automatically. With --json, the output includes the function name, environment ID, output file path, variable count, and variable names.

Related commands

• tcb fn detail: show function configuration and environment variables
• tcb fn deploy: overwrite cloud values with environment variables from the configuration file