man-online

#!/bin/bash -e

section=

helpandquit()
{
      cat <<-EOF
	  Usage: $0 [man options] [[section] page ...] ...

	  OPTIONS:
	    -h, --help       help screen
	EOF
    exit 0
}

cleanup()
{
    [ -z "$tmpdir" ] || rm -rf "$tmpdir"
}

show()
{
    local topic="${1:?}"
    if ! curl -s -f -o "$tmpdir/$topic".gz -f -L https://manpages.opensuse.org/"$topic${section:+.}$section".gz; then
	echo "Failed to fetch $topic" >&2
	return 0
    fi
    mandoc -l "$tmpdir/$topic.gz"
}

getopttmp=$(getopt -o hs: --long help -n "${0##*/}" -- "$@")
eval set -- "$getopttmp"

while true ; do
    case "$1" in
	-h|--help) helpandquit ;;
	-s) section="$2"; shift 2 ;;
	--) shift ; break ;;
	*) echo "Internal error!" ; exit 1 ;;
    esac
done

[ -z "$1" ] && helpandquit

tmpdir=$(mktemp -d -t addimageencryption.XXXXXX)
trap cleanup EXIT

if [ -z "$section" ] && [ "${1/#[0-9]/}" != "$1" ]; then
    section="$1"
    shift
fi

for i in "$@"; do
    show "$i"
done