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Accepted
rubo77
Asked: 2014-05-21 01:17:01 +0800 CST

How can I watch the output that was filtered with grep?

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I want to watch the changes of the output

gsettings list-recursively|grep text-scal

which is 

org.gnome.desktop.interface text-scaling-factor 1.0  
com.canonical.Unity.Interface text-scale-factor 1.0

but if I try to watch it with

watch gsettings list-recursively|grep text-scal

I get no output, because the pipe seems to be the problem.

How can I still watch the changes?

command-line

1 Answers

  1. Best Answer

    You need to enclose the piped command in quotes as follows:

    watch -n 2 'gsettings list-recursively|grep text-scal'

    This will execute the command gsettings list-recursively|grep text-scal and watch it every two seconds. Note that the time interval is in seconds.

    Refer to watch's manual page for more.

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