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56 lines
1.2 KiB
Bash
56 lines
1.2 KiB
Bash
#!/bin/sh
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2020-08-24 00:05:26 +0100 (Mon, 24 Aug 2020)
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#
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# https://github.com/HariSekhon/DevOps-Bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# 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
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -eu #o pipefail # not available in POSIX sh
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if [ "${SHELL##*/}" = bash ]; then
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# shellcheck disable=SC2039
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set -o pipefail
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fi
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(dirname "$0")"
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# shellcheck disable=SC1090
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. "$srcdir/lib/packages.sh"
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# shellcheck disable=SC2154
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usage(){
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cat <<EOF
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Checks a given list of APK packages and returns those already installed
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$package_args_description
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Tested on Alpine
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usage: ${0##*/} <packages>
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EOF
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exit 3
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}
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for arg; do
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case "$arg" in
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-*) usage
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;;
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esac
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done
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installed_packages="$(mktemp)"
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trap 'rm -f -- "$installed_packages"' EXIT
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installed_apk > "$installed_packages"
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process_package_args "$@" |
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grep -Fx -f "$installed_packages" || : # grep causes pipefail exit code breakages in calling code when it doesn't match
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