Download the latest (or any specified version) of Anaconda3 installer script.

anaconda-get-installer.sh

#!/bin/sh
# PD 2018-05-01
# Get the latest Anaconda installer (or a specified version). If already present, skip downloading.

OPTIND=1

output_dir="."

show_help() {
    echo "usage: $0 [-v version] [-d output_dir]"
    echo "description:"
    echo "  Look for the latest Anaconda installer for the current platform (or for a version if specified)."
    echo "  If the installer is already installed in \$output_dir/, then download is skipped."
    echo "  A symlink '\$output_dir/installer.sh' is created to point to the installer (the latest, or the specified version)."
}

while getopts "h?v:d:" opt; do
    case "$opt" in
    h|\?)
        show_help
        exit 0
        ;;
    v)  version=$OPTARG
        ;;
    d)  output_dir=$OPTARG
        ;;
    esac
done

shift $((OPTIND-1))
[ "${1:-}" = "--" ] && shift

if [ ! -z $@ ]; then
    echo "Ignoring trailing argument(s): $@"
fi

if [ -z "$version" ]; then
    echo "no version specified, looking for the latest"
    version='[\d.]+'
else
    echo "Looking for version $version"
fi

echo "Output directory is $output_dir"

if [ ! -d $output_dir ]; then
    echo "mkdir $output_dir"
    mkdir -p "$output_dir"
fi


case "$(uname -s)" in

   Darwin)
     osname="MacOSX"
     ;;

   Linux)
     osname="Linux"
     ;;

   CYGWIN*|MINGW32*|MSYS*)
     osname='Windows'
     ;;

   *)
     echo 'Unrecognized OS:' $(uname -s)
     exit 1
     ;;
esac

anaconda_url=https://repo.continuum.io/archive
anaconda_filename=$(curl -sL $anaconda_url | perl -ne 'BEGIN {$osname="'$osname'"; $version=qr{'$version'}; $arch=qx{uname -m}; chomp $arch; $suffix="${osname}-${arch}"; } die "could not find a suitable version for $version" if eof; next unless /<a href="(Anaconda3-${version}-${suffix}.sh)">/; print "$1\n"; last')

echo "Latest version found is: '$anaconda_filename'"
target="$output_dir/$anaconda_filename"
target_link="$output_dir/anaconda-installer.sh"

if [ -f "$target" ]; then
  echo "Already installed"
else
  echo "Downloading..."
  installer_remote="$anaconda_url/$anaconda_filename"
  curl -L $installer_remote > "$target"
fi

chmod a+rx "$target"
ln -sf "$target" "$target_link"
echo "$anaconda_filename downloaded and linked as '$target_link'."