install-hugo.sh

#!/bin/bash

set -e

if ! command -v jq &> /dev/null
then
    echo "jq could not be found, installing"
    # Reinvoke this script with sudo if necessary
    [[ $(id -u) -eq 0 ]] || exec sudo /bin/bash -c "$(printf '%q ' "$BASH_SOURCE" "$@")"
    sudo apt install -y jq
fi

VFILE=".hugoversion"
VERSION=$(cat $VFILE)

echo "Searching for Hugo $VERSION"

URL=`curl -s https://api.github.com/repos/gohugoio/hugo/releases \
      | jq -r --arg version $VERSION \
          '[.[] 
          | select(.tag_name == $version) 
          | .assets[] 
          | select(.browser_download_url | test("hugo_extended(.*)Linux-64bit"))][0]
          | .browser_download_url'`

echo "Found $URL"

INSTALLER=$(basename $URL)

wget -q --show-progress -P /tmp $URL

# Around v0.102.3 hugo_extended(.*)Linux-64bit.deb was
# replaced with hugo_extended(.*)Linux-64bit.tar.gz
if [[ $URL == *.tar.gz ]]; then
  tar -C /tmp -xf /tmp/$INSTALLER
  mv /tmp/hugo /usr/local/bin/hugo
else
  sudo dpkg -i /tmp/$INSTALLER
fi

rm /tmp/$INSTALLER