I would like to kill a list of PID that correlates to a process in a tcsh shell. I ran the following command:

```
> losf <file> | awk '{print($2)"'

```

The command will show a list of PIDs.

> 
> pid1
> 
> 
> pid2
> 
> 
> ...
> 
> 
> 

I then ran the following command to kill those PIDs.

```
> kill -9 `lsof <file> | awk'{print($2)}'`

```

When the `kill` command is executed, the terminal just somehow hanged without killing any PID. I then had to revert to killing those PID one by one.

Therefore, is there a way to do what I intended to do as illustrated above? Thank you.