@Ren

It works just fine, however, you need to specify process PID , for instance:

top -b -n 1 -p 2458 | tail -1 | awk ‘{print $NF}’

I know this is what you meant, am simply trying to remind users(especially newbies) who may run the command just as it is above, to know that the -p flag actually requires an argument(process ID).

Many thanks for the wonderful tip and always following us.

@Ren,

Thanks for the sharing the tip, hope it will helpful to other Linux users as well..

$ top -b -n 1 -p | tail -1 | awk ‘{print $NF}’