The sound menu in gnome shell have no mute/unmute option.

so if the sound is muted i have to open Sound Settings and unmute it,unlike unity

i,e, i want to add a mute/Unmute button to gnome shell sound menu, as i need it frequently.
The sound menu in gnome shell have no mute/unmute option.

so if the sound is muted i have to open Sound Settings and unmute it,unlike unity

i,e, i want to add a mute/Unmute button to gnome shell sound menu, as i need it frequently.
You may find the following gnome shell extension useful to do this. It allows switching audio as well as muting and unmuting.
Middle click on the sound icon mutes/unmutes the sound (at least in Unity it does).