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I'm trying to kill and restart pulseaudio in verbose mode, I need to search in the output. I tried to use the pipe to grep the output. After that failed I tried to append the output to a file. I'm doing something wrong.

The kill and start command is

pulseaudio -k && pulseaudio -v

I'm trying to do something like this:

pulseaudio -k && pulseaudio -v | grep conf
(pulseaudio -k && pulseaudio -v) > 'aout.txt'
pulseaudio -k && (pulseaudio -v > 'aout.txt')

It still just displays the output as it is in the terminal. What am I doing wrong?

Note that I prefer to grep than to append to file.

1 Answer 1

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You likely need to redirect the commands' standard error as well e.g. (using bash command grouping, so as to capture both commands error streams with a single redirect)

{ pulseaudio -k && pulseaudio -v ; } 2>&1 | grep 'conf'

or using the shorthand |& operator

{ pulseaudio -k && pulseaudio -v ; } |& grep 'conf'

To redirect to a file

{ pulseaudio -k && pulseaudio -v ; } > aout.txt 2>&1

(note the order of redirections) or its semantic equivalent

{ pulseaudio -k && pulseaudio -v ; } &> aout.txt 2>&1

See the REDIRECTION section of man bash

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  • yes that works for grep but the append isn't working. I'm trying { pulseaudio -k && pulseaudio -v; } 2>&1>'aout.txt'
    – 842Mono
    Mar 16, 2017 at 17:47
  • { pulseaudio -k && pulseaudio -v; }>'aout.txt' 2>&1 got it! thank you very much!!! cheers :D
    – 842Mono
    Mar 16, 2017 at 17:51

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