当我遇到以下情况时，我正在升级软件包 -
$ sudo aptitude install openjdk-9-jre=9~b87-1 openjdk-9-jre-headless=9~b87-1 -y
The following packages will be upgraded:
openjdk-9-jre openjdk-9-jre-headless
2 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 30.9 MB of archives. After unpacking 175 MB will be freed.
Get: 1 http://httpredir.debian.org/debian/ experimental/main openjdk-9-jre amd64 9~b87-1 [39.4 kB]
Get: 2 http://httpredir.debian.org/debian/ experimental/main openjdk-9-jre amd64 9~b87-1 [39.4 kB]
Get: 3 http://httpredir.debian.org/debian/ experimental/main openjdk-9-jre-headless amd64 9~b87-1 [30.8 MB]
Fetched 30.9 MB in 21min 2s (24.4 kB/s)
Retrieving bug reports... Done
Parsing Found/Fixed information... Done
Reading changelogs... Done
apt-listchanges: Do you want to continue? [Y/n] y
apt-listchanges: Mailing root: apt-listchanges: changelogs for think-debian
(Reading database ... 375935 files and directories currently installed.)
Preparing to unpack .../openjdk-9-jre_9~b87-1_amd64.deb ...
Unpacking openjdk-9-jre:amd64 (9~b87-1) over (9~b80-2) ...
Preparing to unpack .../openjdk-9-jre-headless_9~b87-1_amd64.deb ...
Unpacking openjdk-9-jre-headless:amd64 (9~b87-1) over (9~b80-2) ...
Processing triggers for gnome-menus (3.13.3-6) ...
Processing triggers for mime-support (3.59) ...
Processing triggers for desktop-file-utils (0.22-1) ...
Setting up openjdk-9-jre-headless:amd64 (9~b87-1) ...
update-binfmts: warning: /usr/share/binfmts/jar: no executable /usr/bin/jexec found, but continuing anyway as you request
Setting up openjdk-9-jre:amd64 (9~b87-1) ...
Scanning processes...
Scanning linux images...
Running kernel seems to be up-to-date.
No services need to be restarted.
No containers need to be restarted.
/usr/bin/jexec 缺少的任何想法。