Updates mergerfs to the latest version

update-mergerfs

#!/usr/bin/env bash

# Read a single char from /dev/tty, prompting with "$*"
# Note: pressing enter will return a null string. Perhaps a version terminated with X and then remove it in caller?
# See https://unix.stackexchange.com/a/367880/143394 for dealing with multi-byte, etc.
function get_keypress {
  local REPLY IFS=
  >/dev/tty printf '%s' "$*"
  [[ $ZSH_VERSION ]] && read -rk1  # Use -u0 to read from STDIN
  # See https://unix.stackexchange.com/q/383197/143394 regarding '\n' -> ''
  [[ $BASH_VERSION ]] && </dev/tty read -rn1
  printf '%s' "$REPLY"
}

# Get a y/n from the user, return yes=0, no=1 enter=$2
# Prompt using $1.
# If set, return $2 on pressing enter, useful for cancel or defualting
function get_yes_keypress {
  local prompt="${1:-Are you sure [y/n]? }"
  local enter_return=$2
  local REPLY
  # [[ ! $prompt ]] && prompt="[y/n]? "
  while REPLY=$(get_keypress "$prompt"); do
    [[ $REPLY ]] && printf '\n' # $REPLY blank if user presses enter
    case "$REPLY" in
      Y|y)  return 0;;
      N|n)  return 1;;
      '')   [[ $enter_return ]] && return "$enter_return"
    esac
  done
}

# Credit: http://unix.stackexchange.com/a/14444/143394
# Prompt to confirm, defaulting to NO on <enter>
# Usage: confirm "Dangerous. Are you sure?" && rm *
function confirm {
  local prompt="${*:-Are you sure} [y/N]? "
  get_yes_keypress "$prompt" 1
}

# Prompt to confirm, defaulting to YES on <enter>
function confirm_yes {
  local prompt="${*:-Are you sure} [Y/n]? "
  get_yes_keypress "$prompt" 0
}

source /etc/os-release
ARCH=`uname --m`
[[ "$ARCH" == "x86_64" ]] && ARCH="amd64"
[[ "$ARCH" == "aarch64" ]] && ARCH="arm64"

echo "Checking system info"
echo " - Linux System: $ID"
echo " - Linux Release: $VERSION_CODENAME"
echo " - System Arch: $ARCH"
echo "Checking for latest mergerfs version"
PKG_VERSION=$(curl -s "https://github.com/trapexit/mergerfs/releases/latest/download" 2>&1 | grep -Po [0-9]+\.[0-9]+\.[0-9]+) || { echo  >&2 "Failed to get package version!"; exit 1; }
echo " - $PKG_VERSION"
PKG_NAME="mergerfs_${PKG_VERSION}.${ID}-${VERSION_CODENAME}_${ARCH}.deb"
PKG_URL="https://github.com/trapexit/mergerfs/releases/download/$PKG_VERSION"
echo "Downloading mergerfs $PKG_VERSION" && \
wget -q -O "/tmp/$PKG_NAME" "$PKG_URL/$PKG_NAME" || { echo >&2 "Failed to get mergerfs!"; exit 1; }
echo " - Got the package"
confirm_yes "Install latest mergerfs $PKG_VERSION now?" || { exit 1; }
echo "Installing mergerfs package"
dpkg -i "/tmp/$PKG_NAME" || { echo >&2 "Failed to install mergerfs!"; exit 1; }
echo "All done!"
rm "/tmp/$PKG_NAME" > /dev/null

Hi
I stumbled on your gist when I realised my factory install latest versison was a long way behind the official builds.

However, $(curl -s "https://github.com/trapexit/mergerfs/releases/latest/download" 2>&1 | grep -Po [0-9]+\.[0-9]+\.[0-9]+) does not pull back the latest version (nor indeed, any version) and so nothing downloads :(

Hi, looks like my command isn’t quite right. There are many ways to download a latest release…. Here’s a good gist: https://gist.github.com/steinwaywhw/a4cd19cda655b8249d908261a62687f8

And here is the actual repo I’m downloading from, you can always just paste the link to the exact version instead: https://github.com/trapexit/mergerfs