Useful aliases

aliases.sh

myip() {
    curl -4 "http://icanhazip.com/"
}

myip6() {
    curl -6 "http://icanhazip.com/"
}

reverse_ipv4() {
    local ip="$1"
    echo "$ip" | awk -F. '{print $4 "." $3 "." $2 "." $1}'
}

dig_asn() {
    local rev_ip=$(reverse_ipv4 $1)
    dig -t TXT +short "$rev_ip.origin.asn.cymru.com"
}

whois_asn() {
    whois -h whois.cymru.com " -v $1"
}

case $(uname -s) in
    Darwin)
        pdfman() {
            man -t $@ | open -f -a /Applications/Preview.app
        }
    ;;
    *)
        evince_stdin() {
            local temp_file=$(mktemp -t evince-$USER.XXXXXX || exit 1)
            cat > "$temp_file"
            evince "$temp_file"
            sleep 2
            rm -f "$temp_file"
        }

        pdfman() {
            man -Tpdf $@ | evince_stdin &
        }
    ;;
esac