accio_jailerctl

#!/bin/sh

# Global Variables
COLOUR_SET_R="\033[0;31m"
COLOUR_SET_G="\033[0;32m"
COLOUR_SET_Y="\033[0;33m"
COLOUR_SET_B="\033[0;34m"
COLOUR_SET_M="\033[0;35m"
COLOUR_SET_C="\033[0;36m"
COLOUR_SET_W="\033[0;37m"
COLOUR_END="\033[0m"

JAILERCTL_VERSION="v0.1.3"
INSTALL_PATH="${HOME}/.jailerctl"

if [ -z "${BRANCH}" ];
then
  BRANCH=${JAILERCTL_VERSION}
fi

if [ -z "${LOCATION}" ];
then
  LOCATION="${INSTALL_PATH}"
fi

_url="https://raw.githubusercontent.com/illuria/jailerctl/${BRANCH}/jailerctl"
_org="https://github.com/illuria"

exit_err(){
  printf "${COLOUR_END}\n"
  exit 1
}

if which fetch >/dev/null 2>&1;
then
  _fetcher="fetch -qo"
elif which curl >/dev/null 2>&1;
then
  _fetcher="curl -sf -o"
elif which wget >/dev/null 2>&1;
then
  _fetcher="wget -q -O"
fi

printf "${COLOUR_SET_B}Fetching and Installing "
printf "${COLOUR_SET_G}jailerctl(1)...\n"
printf " ${COLOUR_SET_M}Version  : ${COLOUR_SET_C}%s\n" "${BRANCH}"
printf " ${COLOUR_SET_M}Fetcher  : ${COLOUR_SET_C}%s\n" "${_fetcher}"
printf " ${COLOUR_SET_M}Location : ${COLOUR_SET_C}%s\n" "${LOCATION}"

[ ! -d ${LOCATION}/bin ] && ( mkdir -p ${LOCATION}/bin || printf "${COLOUR_SET_R}mkdir failed :(\n" && exit_err )

printf "${COLOUR_SET_B}Downloading : " \
  && ( ${_fetcher} ${LOCATION}/bin/jailerctl ${_url} && printf "${COLOUR_SET_G}Done!\n" ) \
  || ( printf "${COLOUR_SET_R}Failed :(\n" && exit_err )

printf "${COLOUR_SET_B}Installing  : " \
  && ( chmod +x ${LOCATION}/bin/jailerctl && printf "${COLOUR_SET_G}Done!\n" ) \
  || ( printf "${COLOUR_SET_R}Failed :(\n" && exit_err )

printf "${COLOUR_END}"

echo "jailerctl is now installed!"
echo ""
echo "Getting Started : ${_org}/jailerctl/wiki/Getting-Started"
echo "Running Jailer  : ${_org}/jailer"
echo ""
echo "please add ${LOCATION}/bin to your \$PATH"
echo "export PATH=${LOCATION}/bin:\$PATH"