ASP/netns/exec

#!/usr/bin/env python3
#echo "name green_$1 command $2"

#CMD="su user -c 'screen -d -m -S "'"'"$1"'"'" "'"'"$2"'"'"' "
#echo "cmd: $CMD"
#CMD2="sudo ip netns exec "'"'"green_$1"'"'" $CMD"
#echo "cmd: $CMD2"
import os
import sys 
import pwd

#username = os.getlogin( ) 
username = pwd.getpwuid(os.getuid())[0]
print([username])
if username == "root":
    print( "do not execute this programm with root or sudo")
    sys.exit()

from optparse import OptionParser
parser = OptionParser()
parser.add_option("--id",  dest="id",
                  help="set netns id = ip")

parser.add_option("--cmd", dest="cmd",
                  help="cmd to execute in network-namespace")

parser.add_option("--noexit",
                  action='store_true')

(options, args) = parser.parse_args()
print("option",options)
#print( dir(parser))

if options.id is None:
    print("please set network-namespace --id=xx")
    sys.exit()

if options.cmd is None:
    print("exec: please set --cmd=xxxx")
    sys.exit()


cmd="sudo /opt/netns/_exec --id=\"{id}\" --user=\"{user}\" --cmd=\"{cmd}\" "  # ok
print(cmd)
cmd2=cmd.format(user=username,id=options.id,cmd=options.cmd)
print(cmd2)
os.system(cmd2)

if options.noexit:
    pass
else:
    os.system("reset")
    os.system("echo 'reset ok'")