def background_process(self, cmd, stdout=False, stderr=False, env=None):
'''Add a new background process and begin running it.'''
process = KProcess()
#if env:
# process.setEnv()
process.setNextOpenMode(QIODevice.ReadOnly|QIODevice.Text)
if stdout and stderr:
process.setOutputChannelMode(KProcess.MergedChannels)
else:
if stdout:
process.setOutputChannelMode(KProcess.OnlyStdoutChannel)
elif stderr:
process.setOutputChannelMode(KProcess.OnlyStderrChannel)
process.setProgram(cmd)
process.start()
self.__process = process
