#!/usr/bin/env python2
from command import Command
if __name__ == '__main__' :
ls_cmd = Command('ls')
print 'run with system'
res = ls_cmd.runBackResult(['-al'])
print 'res is %d' % (res)
print ''
res = ls_cmd.runBackResult(None)
print 'res is %d' % (res)
print ''
print 'run with popen'
res = ls_cmd.runBackStr(['-al'])
print res
res = ls_cmd.runBackStr(None)
print res
res = ls_cmd.runBackStr(123)
