I am curious if there is a script friendly way to compute the equivalent of
apt list --upgradeable. That produces a nice output with exactly one upgrade candidate per line, very parseable. BUT,
apt also warns:
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
So I feel I should use venerable
apt-get instead. Unfortunately, the output for that looks something like:
apt-get -s --no-download dist-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following NEW packages will be installed: dbus libdbus-1-3 The following packages will be upgraded: bash gcc-8-base gpgv libedit2 libgcc1 libprocps7 libpsl5 libselinux1 libsemanage-common libsemanage1 libsepol1 libsqlite3-0 libstdc++6 perl-base procps publicsuffix rsyslog twigpilot-core 18 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. ...
Which is much less parseable. So I was hoping for some way to get
apt-get update to print a more succinct list like