à la deuxième ligne de la vérification de shurfshark, j'ai comme réponse : permission non accordée.
le retour :
munudigbras@munudigbras:/etc/apt/sources.list.d$ apt list | grep "installé, local"
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
linux-headers-5.3.0-51-generic/now 5.3.0-51.44 amd64 [installé, local]
linux-headers-5.3.0-51/now 5.3.0-51.44 all [installé, local]
linux-image-5.3.0-51-generic/now 5.3.0-51.44 amd64 [installé, local]
linux-modules-5.3.0-51-generic/now 5.3.0-51.44 amd64 [installé, local]
linux-modules-extra-5.3.0-51-generic/now 5.3.0-51.44 amd64 [installé, local]
net.downloadhelper.coapp/now 1.3.0 amd64 [installé, local]
surfshark-release/now 1.0.0-1.1 amd64 [installé, local]
surfshark-vpn/now 1.0.0 amd64 [installé, local]
zoom/now 5.0.399860.0429 amd64 [installé, local]
cordialement