Kill list of zombie process on Linux(Eos)

Due to a script bug, one EOS device has quite some zombie process like,

[admin@bn302 flash]$ ps aux  | grep 'CliShell -A'
root     28804  0.0  0.0  10504  8580 ?        S    10:53   0:00 CliShell -A -p 15 -c show port-channel | json
root     28809  0.0  0.0  10504  8688 ?        S    10:53   0:00 CliShell -A -p 15 -c show port-channel | json
root     28826  0.0  0.0  10504  8612 ?        S    10:54   0:00 CliShell -A -p 15 -c show port-channel | json
root     28835  0.0  0.0  10504  8580 ?        S    10:54   0:00 CliShell -A -p 15 -c show port-channel | json
root     28844  0.0  0.0  10504  8616 ?        S    10:54   0:00 CliShell -A -p 15 -c show port-channel | json
....

Instead of killing one by one manually, write a quick shell command to kill all. (killall is not supported in EOS/Linux)

[admin@bn302 flash]$ for pid in $(ps aux  | grep 'CliShell -A' | awk '{print $2, $11}' | grep CliShell | awk '{print $1}'); do sudo kill -9 $pid; done