Exec Command and Write Output to File

exec_with_output.py

import os
import subprocess
def exec_with_output(command, command_dir, output_dir, output_filename):
    """Run command and write output to file
    Args:
        command: string, shell command to execute.
        command_dir: string, directory to execute command from.
        output_dir: string, directory to write output in.
        output_filename: string, directory to write output in.
    """
    # Make sure our directory exists.
    try:
        os.chdir(output_dir)
    except:
        os.makedirs(output_dir)
    # Build our filename.
    filename = os.path.normpath(output_dir + '/' + output_filename)
    # Run the command.
    proc = subprocess.Popen(
        command + ' > ' + filename,
        cwd=command_dir,
        stderr=subprocess.STDOUT,
        shell=True
    )
exec_with_output('echo "Example"', '/tmp/', '/tmp/hello', 'hello.txt')