fs_overwrite

fs_overwrite(filename, content) replaces the entire content of a file in the job’s directory. Ideal for keeping a “latest” snapshot of your scraping results.

Signature

fs_overwrite(filename, content)

async

Note

CWD-jailed: Writes to the job’s directory. Use shared/ prefix to write to the project root’s shared folder (accessible across jobs and server). Absolute paths are not allowed.

Parameters

Param	Type	Description
filename	string	File name (relative to job directory)
content	string	New file content

Returns

None.

Example

function after_fetch(fetch_result, ctx)
    if fetch_result.response then
        local etag = fetch_result.response.headers["ETag"]
        if etag then
            fs_overwrite("last_response.json", json_encode({ etag = etag }))
        end
    end
    return fetch_result
end

See Also

• fs_append - Append to file
• fs_read - Read file content