Linux下用PYTHON查找同名进程

1.可执行程序

os.system('pgrep %s > %s' % (process, output))
   pidfile = open("output", 'r')
   totalpid = len(pidfile.readlines())

   pidfile.close()
   if totalpid == 0 :
                                #没有进程
                                return False
                        elif totalpid > 1 :
                                #多个进程
                                os.system('killall -9 %s' % (process))
                                return False
                        else :
                                return True   

2.python 启动的脚本

os.system('ps aux | grep %s > %s' % (process, output))
                        pidfile = open(output, 'r')
                        totalpid = len(pidfile.readlines())
                        pidfile.close()
                        while totalpid > 3 :
                                os.system("kill -9 `ps aux | grep %s | sed -n '1P' | awk '{print $2}' ` " % (process))
                                os.system('ps aux | grep %s > %s' % (process, output))
                                pidfile = open(output, 'r')
                                totalpid = len(pidfile.readlines())
                                pidfile.close()