Re: How do I accomplish this?

[Dominik Vogt <vogt@linux.vnet.ibm.com>]

On Thu, Jan 26, 2017 at 12:19:10PM -0800, Kannan Varadhan wrote:
> Some of the commands I run seem to take a long time, but also
> varying amounts of time.
> 
> I'd like to prefix "time" to every command that runs.  So that,
> 
> when I type:
> 
> 
>     % make long-running-target
> 
> I'd like to see the equivalent of:
> 
> 
>     % time make long-running-target
> 
>     ...
> 
>     make long-running-target     0.00s user 0.00s system 66% cpu
> 0.004 total
> 
> 
> I thought preexec() might help:
> 
> 
>     preexec() {
> 
>         set $3
> 
>         eval time "$@"
> 
>     }
> 
> 
> but this ends up running the same command twice, once timed, and
> once without.

Setting REPORTTIME does the trick:

  REPORTTIME=1  # stats for procs using 1 or more seconds

Ciao

Dominik ^_^  ^_^

-- 

Dominik Vogt
IBM Germany