Merci de ton aide !
J'obtiens ceci en retour :
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package libpcrecpp0 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
libpcrecpp0v5
Package libssl0.9.8 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'libpcrecpp0' has no installation candidate
E: Package 'libssl0.9.8' has no installation candidate