Fixing Metasploit install/upgrade(s) on Ubuntu 22.04

$ msfupdate
Switching to root user to update the package
[sudo] password for anon: 
Adding metasploit-framework to your repository list..Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
OK
Updating package cache..W: http://downloads.metasploit.com/data/releases/metasploit-framework/apt/dists/lucid/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
OK
Checking for and installing update..
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done

$ which msfupdate
/usr/bin/msfupdate
$ ls -lh /usr/bin/msfupdate
lrwxrwxrwx 1 root root 27 Mar 28  2023 /usr/bin/msfupdate -> /etc/alternatives/msfupdate
$ ls -lh /etc/alternatives/msfupdate
lrwxrwxrwx 1 root root 39 Mar 28  2023 /etc/alternatives/msfupdate -> /opt/metasploit-framework/bin/msfupdate
$ ls -lh /opt/metasploit-framework/bin/msfupdate 
-rwxr-xr-x 1 root root 5.9K Dec 20 03:44 /opt/metasploit-framework/bin/msfupdate

$ curl -L https://raw.githubusercontent.com/rapid7/metasploit-omnibus/master/config/templates/metasploit-framework-wrappers/msfupdate.erb > msfinstall
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  6034  100  6034    0     0  31890      0 --:--:-- --:--:-- --:--:-- 32095
$ sha256sum msfinstall 
f1d37c6517634d1cce1e7e022668179551bcbdc141a716d35ae4b03c19da126a  msfinstall
$ sha256sum /opt/metasploit-framework/bin/msfupdate 
f1d37c6517634d1cce1e7e022668179551bcbdc141a716d35ae4b03c19da126a  /opt/metasploit-framework/bin/msfupdate

APT-KEY(8)                                                                  APT                                                                 APT-KEY(8)

NAME
       apt-key - Deprecated APT key management utility
...
DEPRECATION
       Except for using apt-key del in maintainer scripts, the use of apt-key is deprecated. This section shows how to replace existing use of apt-key.

       If your existing use of apt-key add looks like this:

       wget -qO- https://myrepo.example/myrepo.asc | sudo apt-key add -

       Then you can directly replace this with (though note the recommendation below):

       wget -qO- https://myrepo.example/myrepo.asc | sudo tee /etc/apt/trusted.gpg.d/myrepo.asc

       Make sure to use the "asc" extension for ASCII armored keys and the "gpg" extension for the binary OpenPGP format (also known as "GPG key public
       ring"). The binary OpenPGP format works for all apt versions, while the ASCII armored format works for apt version >= 1.4.

       Recommended: Instead of placing keys into the /etc/apt/trusted.gpg.d directory, you can place them anywhere on your filesystem by using the
       Signed-By option in your sources.list and pointing to the filename of the key. See sources.list(5) for details. Since APT 2.4, /etc/apt/keyrings is
       provided as the recommended location for keys not managed by packages. When using a deb822-style sources.list, and with apt version >= 2.4, the
       Signed-By option can also be used to include the full ASCII armored keyring directly in the sources.list without an additional file.

$ apt-key list
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
/etc/apt/trusted.gpg
--------------------

pub   rsa4096 2012-12-06 [SC] [expires: 2029-09-02]
      09E5 5FAF 4F78 62CD 6D55  8997 CDFB 5FA5 2007 B954
uid           [ unknown] Metasploit <metasploit@rapid7.com>
sub   rsa4096 2012-12-06 [E] [expires: 2029-09-02]
$ sudo apt-key del 2007B954
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
OK

$ echo "$(. /etc/os-release && printf ${VERSION_CODENAME-stretch})"
jammy

install_deb() {
  LIST_FILE=/etc/apt/sources.list.d/metasploit-framework.list
  PREF_FILE=/etc/apt/preferences.d/pin-metasploit.pref
  echo -n "Adding metasploit-framework to your repository list.."
  echo "deb [signed-by=/usr/share/keyrings/metasploit.gpg] https://apt.metasploit.com xenial main" > $LIST_FILE
  print_pgp_key | sudo gpg --dearmor > /usr/share/keyrings/metasploit.gpg 
  if [ ! -f $PREF_FILE ]; then
    mkdir -p /etc/apt/preferences.d/
    cat > $PREF_FILE <<EOF
Package: metasploit*
Pin: origin apt.metasploit.com
Pin-Priority: 1000
EOF
  fi
  echo -n "Updating package cache.."
  apt-get update > /dev/null
  echo "OK"
  echo "Checking for and installing update.."
  apt-get install -y --allow-downgrades metasploit-framework
}