miniconda batch/slient web installation wrapper that can be executed also without downloading/saving it to disk

miniconda_installer.sh

#!/usr/bin/env bash

##################################################
# usage:
#    $ ./install_miniconda.sh ~/apps/miniconda
#    $ ./install_miniconda.sh ~/apps/miniconda --mamba
#    $ ./install_miniconda.sh ~/apps/miniconda --installer latest
#    $ ./install_miniconda.sh ~/apps/miniconda --upgrade --mamba
#    $ ./install_miniconda.sh ~/apps/miniconda --installer latest --upgrade --mamba
#    $ ./install_miniconda.sh ~/apps/miniconda --installer Miniconda3-py310_23.5.1-0-Linux-x86_64.sh --upgrade --mamba

# execute the script without saving it to disk:
#    $ curl -s https://gist.githubusercontent.com/mherkazandjian/cce01cf3e15c0b41c1c4321245a99096/raw/8e6fc33e78e2b82126fcaa125d14f2871236d99b/miniconda_installer.sh | bash -s -- ~/miniconda --mamba
##################################################

#!/bin/bash

function usage() {
  local script_name=$(basename "$0")
  echo "Usage: $script_name /path/to/prefix/ [-u|--upgrade] [-i|--installer <installer_name>]"
  echo "  /path/to/prefix/  the installation root directory of miniconda (e.g /opt/conda)"
  echo "  -i|--installer     the miniconda installer name (e.g Miniconda3-latest-Linux-x86_64.sh)"
  echo "                     others can be specified from https://repo.anaconda.com/miniconda/"
  echo "  -m|--mamba         install mamba in the base environment"
  echo "  -u|--upgrade       upgrade miniconda packages"
  echo "  -h|--help          show this help text"
  exit 0
}

# the installation root directory of miniconda (e.g /opt/conda)
INSTALL_PREFIX=$1
shift

while [ $# -gt 0 ]; do
    case "$1" in
        -i|--installer)
            [ -n "$2" ] && INSTALLER=$2 || usage
            shift
            ;;
        -m|--mamba)
            [ -n "$1" ] && MAMBA=1 || usage
            ;;
        -u|--upgrade)
            [ -n "$1" ] && UPGRADE=1 || usage
            ;;
        -h|--help)
            usage
            ;;
        *)
            usage
            ;;
    esac
    shift
done
shift $((OPTIND - 1))

# ---------------- process the cmd line args ----------------
## if the installer is latest use the latest online installed
if [ "${INSTALLER}" == "latest" ]; then
    INSTALLER="Miniconda3-latest-Linux-x86_64.sh"
fi


# -----------------------------------------------------------

# set the defaults and the values based on what has been passed from the
# command line
INSTALLER=${INSTALLER:-Miniconda3-py39_23.5.2-0-Linux-x86_64.sh}
UPGRADE=${UPGRADE:-0}
MAMBA=${MAMBA:-0}

# ---------------------------------

# the absolute path of the miniconda installer (e.g Miniconda3-latest-Linux-x86_64.sh
# after it is downloaded. This is where curl will try to put it
INSTALLER_PATH=/tmp/${INSTALLER}

function _install_miniconda() {
    echo "Installing miniconda to ${INSTALL_PREFIX}"
    echo "Installer: ${INSTALLER}"
    echo "Mamba: ${MAMBA}"
    echo "Upgrade: ${UPGRADE}"
    curl -s -L https://repo.anaconda.com/miniconda/${INSTALLER} -o ${INSTALLER_PATH}
    chmod +x ${INSTALLER_PATH}
    ${INSTALLER_PATH} -b -p ${INSTALL_PREFIX}
    rm ${INSTALLER_PATH}
    ${INSTALL_PREFIX}/bin/conda upgrade -y --all
    ${INSTALL_PREFIX}/bin/conda clean -ya
    ${INSTALL_PREFIX}/bin/conda install -y conda-build conda-verify
    if [ $UPGRADE -eq 1 ]; then
            ${INSTALL_PREFIX}/bin/conda upgrade -y --all
            ${INSTALL_PREFIX}/bin/conda clean -ya
            ${INSTALL_PREFIX}/bin/conda install -y conda-build conda-verify
    fi

    if [ $MAMBA -eq 1 ]; then
        ${INSTALL_PREFIX}/bin/conda install -y mamba -n base -c conda-forge
    fi
}

_install_miniconda