lutostag@cia:~$ python
Python 2.7.12+ (default, Sep 17 2016, 12:08:02) 
[GCC 6.2.0 20160914] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import shlex
>>> shlex.split('curtin in-target -- sh -c sed -i /etc/beegfs/beegfs-client.conf -e"s/^sysMgmtdHost(.*)$/sysMgmtdHost = 10.99.11.124/"')
['curtin', 'in-target', '--', 'sh', '-c', 'sed', '-i', '/etc/beegfs/beegfs-client.conf', '-es/^sysMgmtdHost(.*)$/sysMgmtdHost = 10.99.11.124/']
>>>