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apk_filter_not_installed.sh
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apk_filter_not_installed.sh
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#!/bin/sh
# vim:ts=4:sts=4:sw=4:et
#
# Author: Hari Sekhon
# Date: 2020-08-24 00:05:26 +0100 (Mon, 24 Aug 2020)
#
# https://github.com/harisekhon/bash-tools
#
# License: see accompanying Hari Sekhon LICENSE file
#
# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
#
# https://www.linkedin.com/in/harisekhon
#
set -eu #o pipefail # not available in POSIX sh
if [ "${SHELL##*/}" = bash ]; then
# shellcheck disable=SC2039
set -o pipefail
fi
[ -n "${DEBUG:-}" ] && set -x
srcdir="$(dirname "$0")"
# shellcheck disable=SC1090
. "$srcdir/lib/packages.sh"
# shellcheck disable=SC2154
usage(){
cat <<EOF
Checks a given list of APK packages and returns those not installed
$package_args_description
Tested on Alpine
usage: ${0##*/} <packages>
EOF
exit 3
}
for arg; do
case "$arg" in
-*) usage
;;
esac
done
installed_packages="$(mktemp)"
trap 'rm -f "$installed_packages"' EXIT
installed_apk > "$installed_packages"
process_package_args "$@" |
grep -vFx -f "$installed_packages" || : # grep causes pipefail exit code breakages in calling code when it doesn't match