Re: ionice bash pid in bash_profile Fails

[Chris F.A. Johnson]

On Mon, 22 Nov 2010, Roger wrote:

> On Mon, Nov 22, 2010 at 11:58:25AM -0500, Greg Wooledge wrote:
> > On Mon, Nov 22, 2010 at 07:41:48AM -0900, Roger wrote:
> > > On Mon, Nov 22, 2010 at 08:39:49AM -0500, Greg Wooledge wrote:
> > > > >   ionice -c 2 -n 0 -p `pidof bash`
> > > > If you want the PID of the current shell process, use $$ instead.
> > >
> > > Here's the error I get when logging into a virtual terminal and
> > > $HOME/.bash_profile executes or is read in:
> > >
> > > ionice: ioprio_set failed: No such process
> >
> > Perhaps pidof fails to find the -bash process due to the leading dash?
> > Who knows?  Who cares?  Use $$ to get the PID of the shell.
>
> The following works like a charm:
>
> # See ionice manfile - give high priority to Bash
> ionice -c 2 -n 0 -p `echo $$`

   Why are you using echo?

ionice -c 2 -n 0 -p $$

--
   Chris F.A. Johnson, <http://cfajohnson.com>
   Author:
   Pro Bash Programming: Scripting the GNU/Linux Shell (2009, Apress)
   Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress)