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import sys
import subprocess
def RunShellWithReturnCode(command, print_output=False,
universal_newlines=True):
"""Executes a command and returns the output from stdout and the return code.
Args:
command: Command to execute.
print_output: If True, the output is printed to stdout.
If False, both stdout and stderr are ignored.
universal_newlines: Use universal_newlines flag (default: True).
Returns:
Tuple (output, return code)
"""
p = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
shell=use_shell, universal_newlines=universal_newlines)
if print_output:
output_array = []
while True:
line = p.stdout.readline()
if not line:
break
print line.strip("\n")
output_array.append(line)
output = "".join(output_array)
else:
output = p.stdout.read()
p.wait()
errout = p.stderr.read()
#if print_output and errout:
# print >>sys.stderr, errout
p.stdout.close()
p.stderr.close()
return output, p.returncode
def RunShell(command, silent_ok=False, universal_newlines=True,
print_output=False):
data, retcode = RunShellWithReturnCode(command, print_output,
universal_newlines)
if retcode:
ErrorExit("Got error status from %s:\n%s" % (command, data))
if not silent_ok and not data:
ErrorExit("No output from %s" % command)
return data

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