Ytdyklly

I am wondering is there an easy way to ignore search result output lets say like a $pacmd list-modules | grep -e 'name: <module-cli-protocol-unix>' -e 'argument: '

in this case the output is giving if argument has values or if it doesn't.

The $pacmd list-modules input format snippet:

...    

index: 5#<---not this index because the module's module-cli-protocol-unix arg is empty

name: <module-cli-protocol-unix>#<---not this name though its name is module-cli-protocol-unix but still its arg is empty

argument: <>#<---not this module's arg because it is empty

used: -1

load once: yes

properties:

    module.author = ""

    module.description = ""

    module.version = "10.0"

index: 6

name: <module-switch-on-port-available>

argument: <>

used: -1

load once: no

properties:



index: 7

name: <module-udev-detect>

argument: <>

used: -1

load once: yes

properties:

    module.author = "Lennart Poettering"

    module.description = "Detect available audio hardware and load matching drivers"

    module.version = "10.0"

index: 8

name: <module-bluetooth-policy>

argument: <>

used: -1

load once: yes

properties:

    module.author = "Frédéric Dalleau, Pali Rohár"

    module.description = "Policy module to make using bluetooth devices out-of-the-box easier"

    module.version = "10.0"

index: 9 #<---this one because it is the module-cli-protocol-unix index

name: <module-cli-protocol-unix>#<---this one because its name is module-cli-protocol-unix

argument: <sink_name=module-cli_>#<---this one because module's arg is not empty

used: -1

load once: yes

properties:

    module.author = ""

    module.description = ""

    module.version = "10.0"

index: 10

name: <module-bluez5-discover>

argument: <>

used: -1

load once: yes

properties:

    module.author = "João Paulo Rechi Vita"

    module.description = "Detect available BlueZ 5 Bluetooth audio devices and load BlueZ 5 Bluetooth audio drivers"

    module.version = "10.0"

...

As a final output it would be nice to have something like this:

index: N

name: <module-cli-protocol-unix> 

argument: <not-empty-value> 

According to the exact input example the sorted output should be as:

    index: 9

    name: <module-cli-protocol-unix> 

    argument: <sink_name=module-cli_>

...but the solution should be dynamic in case another module with non-empty args is about to be init-ed...

So my question is how to make grep output name if argument has non-empty value?
And, yes, it would be nice to have a non-script solution... ;).

EDIT

I just tried the solution as pacmd list-modules | grep -B2 'argument: <[^>]' | grep -Po 'index:.*|name: <module-cli-protocol-unix>' but the output is following:

index: 0

index: 1

name: <module-cli-protocol-unix>

index: 25

index: 26

name: <module-cli-protocol-unix>

...which is odd cause it gives 4 index-es for 2 modules but it must have one index per module :S

pacmd list-modules |

grep -B2 'argument: <[^>]' |

grep -B1 -A1 'name: <module-cli-protocol-unix>'

• The -B option prints lines before a match as well as the match itself


• the -A option prints lines after a match


• if whitespace is a problem, it can be stripped with sed, for example

So the process is:

• list all the modules


• filter on non-zero arguments


• then filter on the corect module name

It will be unclear until you provide some sample, but you can try:

pacmd list-modules | grep -v 'argument: <>' | grep -e 'name: <module-cli-protocol-unix>'

It will first reject all strings having empty values for argument and then will only grep those lines which have name: <module-cli-protocol-unix>.

If you are considering argument: <> to be an empty argument then this could work

pacmd list-modules | grep -B2 '^argument: <..*>' | grep -E '^(index|name|argument):'

Output from sample:

index: 9

name: <module-cli-protocol-unix>

argument: <sink_name=module-cli_>

Tried with below command and worked fine

command

pacmd list-modules|awk '/index: [0-9]/||/name: <.*>/||/argument: <.*?>/{print $0}'