python run command and read output
#!/usr/bin/python import subprocess, sys ## command to run - tcp only ## cmd = "/usr/sbin/netstat -p tcp -f inet" ## run it ## p = subprocess.Popen(cmd, shell=True, stderr=subprocess.PIPE) ## But do not wait till netstat finish, start displaying output immediately ## while True: out = p.stderr.read(1) if out == '' and p.poll() != None: break if out != '': sys.stdout.write(out) sys.stdout.flush()