initialize the csc syscom keyring

.gitignore

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+*.bk
+csc-syscom-keyring

csc-syscom-keyring.sh

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+#!/bin/sh
+
+# Copyright (c) 2021  Amin Bandali <bandali@csclub.uwaterloo.ca>
+
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.  This file is offered as-is,
+# without any warranty.
+
+
+# GPG key fingerprints of current syscom members
+keys="${keys:+${keys}} BE6273738E616D6D1B3A08E8A21A020248816103" # bandali
+keys="${keys:+${keys}} 7D0B1775E2626DD899D20BEDDECA0C9D30ED9FE3" # ehashman
+keys="${keys:+${keys}} 8E5568ABB0CF96BC367806ED127923BE10DA48DC" # merenber
+keys="${keys:+${keys}} E024E07230AFD30042CBE964EF125080E702F60F" # ztseguin
+
+printf '\n'
+
+printf '%s' "Backing up the current keyring file..."
+mv csc-syscom-keyring.gpg csc-syscom-keyring.gpg.bk
+printf '%s\n' " done."
+
+# TODO: implement (optional?) refreshing keys from a keyserver
+
+printf '%s' "Creating new keyring with the given key fingerprints..."
+gpg --armor --export $keys > csc-syscom-keyring.gpg
+printf '%s\n' " done."
+
+printf '\n'
+printf '%s\n' \
+       "Before proceeding, please verify (in another terminal) that" \
+       "the new refreshed keyring does not contain spam signatures," \
+       "by running 'ls -lh csc-syscom-keyring.gpg' and checking that" \
+       "the file has a reasonable size (under 1MB)."
+printf '\n'
+printf '%s' "If the file size looks good, press [Enter] to continue..."
+read _
+printf '\n'
+
+printf '%s' "Signing the new keyring with your key..."
+gpg --armor --sign csc-syscom-keyring.gpg
+printf '%s\n' " done."
+
+printf '%s' "Replacing unsigned keyring with signed one..."
+mv csc-syscom-keyring.gpg.asc csc-syscom-keyring.gpg
+printf '%s\n' " done."
+
+printf '%s' "Removing old backup keyring..."
+rm -f csc-syscom-keyring.gpg.bk
+printf '%s\n' " done."
+
+printf '\n%s\n' "All done!"