Get a single file from a launchpad repository

lp_download.sh

#!/bin/bash

# download a single file from launchpad

SRC_FILE=pxc56-mtr.sh
REL_URL=$(
  wget -q -O - "http://bazaar.launchpad.net/~percona-core/percona-qa/trunk/view/head:/${SRC_FILE}" \
        | grep 'download file' \
        | head -n1 \
        | cut -d'"' -f2
)
ABS_URL="http://bazaar.launchpad.net${REL_URL}"
wget -q -O - "$ABS_URL" > ${SRC_FILE}
chmod 755 ${SRC_FILE}