shell foo to clone all git repo under any GitHub ID; install from releases

a.github.sh

#!/bin/bash
# Usage Example: $ clone-github github_id
# would clone all the git repositories managed under github_id at current path
# save it as /etc/profiles/a.github.sh
##
clone-github(){
  GITHUB_ID=$1
  GITHUB_REPO_URI="https://github.com/"$GITHUB_ID"?tab=repositories"
  repos=`curl -skL $GITHUB_REPO_URI | grep 'name codeRepository' | sed 's/.*href=\"//' | sed 's/".*//'`
  for line in `echo $repos | xargs -L1`;
  do
    if [[ -z $line ]]; then
      next
    fi
    repo_git='git://github.com'$line'.git'
    repo_dir=$(basename $line)
    if [[ -d "${repo_dir}" ]]; then
      echo 'Fetching master latest pull for: '$repo_git
      pushd "${repo_dir}" ; git pull ; popd
    else
      echo "Cloning... "$repo_git
      git clone $repo_git
    fi
  done
}

install-from-github-releases.sh

######## _library functions
######## can infer from 'setup-chruby' and 'setup-fzf' at end on how to utilize these

download-release-from-github(){
  local REPO_PATH="$1"
  local REPO_VERSION="$2"
  local TAR_GZ="$3"

  local GITHUB_DDL_HEADERS=$(curl -Iks "https://github.com/${REPO_PATH}/releases/download/${REPO_VERSION}/${TAR_GZ}")

  local URLTO_DDL=$(echo "$GITHUB_DDL_HEADERS"  | grep '^Location: ' | awk '{print $2}' | sed 's/[[:space:]]*$//g')
  local HEADER_GITHUB_REQUEST_ID=$(echo "$GITHUB_DDL_HEADERS"  | grep '^X-GitHub-Request-Id: ' | awk '{print $2}' | sed 's/[[:space:]]*$//g')
  local HEADER_REQUEST_ID=$(echo "$GITHUB_DDL_HEADERS"  | grep '^X-Request-Id: ' | awk '{print $2}' | sed 's/[[:space:]]*$//g')

  curl -H "X-GitHub-Request-Id: ${HEADER_GITHUB_REQUEST_ID}" -H "X-Request-Id: ${HEADER_REQUEST_ID}" -Lk -o "${TAR_GZ}" "${URLTO_DDL}"
}

download-archive-from-github(){
  local REPO_PATH="$1"
  local REPO_VERSION="$2"
  local TAR_GZ="$3"

}

setup-from-github(){
  local REPO_PATH="$1"
  local REPO_VERSION="$2"
  local TAR_GZ="$3"
  local SETUP_CMD="$4"
  local RELEASE_OR_ARCHIVE=${5:-release}

  set -ex

  pushd /tmp
  if [[ "${RELEASE_OR_ARCHIVE}" == "release" ]]; then
    download-release-from-github "${REPO_PATH}" "${REPO_VERSION}" "${TAR_GZ}"
  elif [[ "${RELEASE_OR_ARCHIVE}" == "archive" ]]; then
    local TARBALL_URI="https://github.com/${REPO_PATH}/archive/${TAR_GZ}"
    wget -c -O "${TAR_GZ}" "${TARBALL_URI}"
  else
    echo "[error] unidentified github download type"
  fi
  tar zxvf "${TAR_GZ}"
  eval "${SETUP_CMD}"
  rm  "${TAR_GZ}"
  popd

  set +ex
}


###################### _examples :: release uploads
setup-fzf(){
  local REPO_PATH="junegunn/fzf-bin"
  local REPO_VERSION="0.17.5"
  local TAR_GZ="fzf-0.17.5-linux_amd64.tgz"
  local SETUP_CMD="mv ./fzf ${HOME_BINDIR}/fzf"

  [[ $(fzf --version &>/dev/null ; echo $?) -eq 0 ]] && \
    echo "* fzf is already setup" && \
    return 0

  setup-from-github "${REPO_PATH}" "${REPO_VERSION}" "${TAR_GZ}" "${SETUP_CMD}"
}

###################### _examples :: release source code archives
setup-chruby(){
  local CHRUBY_VERSION="0.3.9"
  local CHRUBY_DIR="chruby-${CHRUBY_VERSION}"
  local FILE_TO_SOURCE="/usr/local/share/chruby/chruby.sh"

  local REPO_PATH="postmodern/chruby"
  local REPO_VERSION="v${CHRUBY_VERSION}"
  local TAR_GZ="${REPO_VERSION}.tar.gz"
  local SETUP_CMD="pushd \"${CHRUBY_DIR}\" ; sudo ./scripts/setup.sh ; popd ; rm -rf \"${CHRUBY_DIR}\""

  [[ -f "${FILE_TO_SOURCE}" ]] && \
    echo "* chruby is already setup" && \
    return 0

  setup-from-github "${REPO_PATH}" "${REPO_VERSION}" "${TAR_GZ}" "${SETUP_CMD}" "archive"

  source "${FILE_TO_SOURCE}"
}