run-one: cron utilities from Ubuntu not available on other distros

cron-utils-setup.sh

#!/bin/bash

source_file="https://bazaar.launchpad.net/~run-one/run-one/trunk/download/head:/runone-20110124065624-91p2i9nu34o1aq4k-2/run-one"
other_commands="keep-one-running
run-one-constantly
run-one-until-failure
run-one-until-success
run-this-one"
bin_path=${INSTALL_PATH:-/usr/local/bin}

curl=$(which curl)

if [ ! -d ${bin_path} ]; then
  echo "Error, missing installation path '$bin_path', create it and relaunch the script or change the path setting variable INSTALL_PATH"
  exit 1
fi

if ${curl} --silent ${source_file} > ${bin_path}/run-one; then
  echo "${bin_path}/run-one ... [OK]"
else
  echo -e "Error downloading file run-one at \n\t'$source_file'\n in\n\t'$bin_path/run-one'"
  exit 2
fi

chmod +x ${bin_path}/run-one

for command in $other_commands; do
  [ ! -f ${bin_path}/${command} ] && \
        ln -s ${bin_path}/run-one ${bin_path}/${command} && \
        echo "${bin_path}/${command} -> ${bin_path}/run-one ... [OK]"
done