[linux-audio-user] A dumb Unix question about console output

[Gustavo Zamorano S.]

OH!  You also want the std. output.
I read the shell given by toby at tobiah.org and it is also a good solution.
You can pipe things to sed, awk  which are the most commonly used 
commands for editing the std. output using pipes.  That is, without 
using temp files.
As you can see, Toby's example does not use sed, awk. It uses echo. But, 
he has to use a while loop.

So, you can have:

A 4 line shell script called runit :


#  runit  command options
cmd=$1
# In case $1 has sub directories, then get just the command name
cmd=`basename $cmd`
#
expr="s?^?${cmd}: ?"
eval `echo "$* 2>&1 | sed '$expr' " `



This script can be installed under /usr/bin .

To run a command type:

runit [command] [command_options]


Standard output and std. errors will be displayed on the xterm with 
command name included.

After all, what I love in Unix is that YOU CAN do these kind of things. 
  Everything is possible.
I recognize that to be able to do this 4 line script takes too much Unix 
experience.

I am using basename to get the filename in case you run:

runit /usr/local/bin/netscape   &


I define expr to create the argument sed expects.  I use quetion marks 
to avoid conflicts with slashes.


Life is harder on any other MOST popular operating systems...specially 
those that crash so often in a daily basis.

GZS


Larry Troxler wrote:
> On Saturday 12 July 2003 22:13, toby at tobiah.org wrote:
> <  I mean, how would you like it if
> 
>>you typed 'ls', only to get back:
>>
>>ls: slow.wav
> 
> 
> ...
> 
> Ahh, I see your point now.
> 
> 
>>Create an executable shell script in your path that looks like this:
>>
>>
>>#***** SCRIPT *****
>>function showme(){
>>         while read foo
>>                 do echo $1: $foo
>>         done
>>}
>>
>>$@ | showme $1
>>#***** /SCRIPT *****
>>
>>I called mine, "identify".
>>
>>Now, let's test it with grep:
>>
>>sinewave:toby:toby> identify grep foo *
>>grep: Binary file DSC00326.TIF matches
>>grep: Binary file QtC-0.0.2.lsm matches
>>grep: adf: afsdadsfadfasdfasdfasdfasdfasdfasdf toby adfadfadf foo
>>grep: adf: print('myfoot', 'myfoot');
>>grep: adf: print('yourfoot', 'yourfoot');
>>grep: doit: while read foo
>>grep: doit: do echo $1: $foo
>>
>>So, now stdout and stderr get prefixed with the name
>>of the program.  Easy, yes?
>>
>>
>>Tobiah
> 
> 
> Well, ok, maybe easy, but still ...
> 
> I guess the answer to my original question is that, yes, people fire up a 
> seperate xterm for each audio app they launch :-)
> 
> I mean, I have a hard time believing that what you're describing is common 
> practice.
> 
> Thanks for your time! (really, thanks!)
> 
> Regards
> 
> Larry Troxler
> 
> 
> 
> 

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       .-.
     .-. |                    Gustavo Zamorano S.