preinst is in leap-archive-keyring 2017.11.24.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | #!/bin/sh
set -e
# cleanup keys from the old /etc/apt/trusted.gpg, because it was not
# properly cleaned up by previous versions of leap-keyring.
# we could try to limit this cleanup to just upgrade moving from
# versions before 2016.03.03, but due to the package rename and the
# possibility of someone having purged the old package before
# installing this new one, it's better to do it unconditionally.
# another way of looking at this is that the installation of this
# package will ensure that the keys in question don't show up in two
# keyrings at once.
if [ -e /etc/apt/trusted.gpg ] && which gpg >/dev/null; then
# remove the version of the keys that were shipped in leap-keyring before version 2016.03.03:
gpg --batch --no-tty --no-default-keyring --keyring /etc/apt/trusted.gpg --delete-key 0x1E453B2CE87BEE2F7DFE99661E34A1828E207901 2>/dev/null || true
gpg --batch --no-tty --no-default-keyring --keyring /etc/apt/trusted.gpg --delete-key 0xCE433F407BAB443AFEA196C1837C1AD5367429D9 2>/dev/null || true
fi
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