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30 lines
1009 B
Python
30 lines
1009 B
Python
#!/usr/bin/env python3
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import subprocess
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import time
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filename_script = './start.sh' # the script that will be executed
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filename_script_output = './log.txt'
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filename_own_input = 'command.txt' # the file this script periodically reads from
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stop_command = b'stop\n' # must be a binary string
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exit_keyword = 'stop'
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with open(filename_own_input, 'w') as f:
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f.write('') # reset content of file and create it if needed
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fd_script_output = open(filename_script_output, 'w') # create file descriptor for script to write its stdout to
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script_process = subprocess.Popen( # start new process running script
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filename_script,
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stdin=subprocess.PIPE, # needed for script_process.communicate() (see below)
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stdout=fd_script_output # redirect output
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)
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while True:
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with open(filename_own_input, 'r') as f:
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if exit_keyword in f.read(): # check if we should exit
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script_process.communicate(input=stop_command) # stop subprocess and wait for it to terminate
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break
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time.sleep(1)
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fd_script_output.close()
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