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35 lines
1.3 KiB
Python
35 lines
1.3 KiB
Python
#!/usr/bin/env python
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# Copyright (c) 2012 Cloudera, Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Utility functions related to executing shell commands.
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import logging
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import shlex
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from subprocess import Popen, PIPE
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logging.basicConfig(level=logging.ERROR, format='%(threadName)s: %(message)s')
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LOG = logging.getLogger('shell_util')
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LOG.setLevel(level=logging.DEBUG)
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def exec_shell_cmd(cmd, run_in_background=False):
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"""Executes a command in the shell, pipes the output to local variables"""
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LOG.debug('Executing: %s' % (cmd,))
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# Popen needs a list as its first parameter. The first element is the command,
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# with the rest being arguments.
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p = Popen(shlex.split(cmd), shell=False, stdout=PIPE, stderr=PIPE)
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if not run_in_background:
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stdout, stderr = p.communicate()
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rc = p.returncode
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return rc, stdout, stderr
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