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#!/usr/bin/env bash
# Derived from: https://gist.github.com/marcusandre/4b88c2428220ea255b83
get_os() {
local ostype
ostype=$(<<< "$OSTYPE" tr '[:upper:]' '[:lower:]')
if [ -z "$ostype" ]; then
ostype=$(uname | tr '[:upper:]' '[:lower:]')
fi
case $ostype in
freebsd*) echo "freebsd" ;;
netbsd*) echo "netbsd" ;;
openbsd*) echo "openbsd" ;;
darwin*) echo "macos" ;;
linux*) echo "linux" ;;
cygwin*) echo "cygwin" ;;
msys*) echo "msys" ;;
mingw*) echo "win" ;;
*) echo "unknown"; exit 1 ;;
esac
}
get_linux_dist() {
if [[ -f /etc/os-release ]]; then
sh -c '. /etc/os-release && echo $ID'
elif type lsb_release >/dev/null 2>&1; then
lsb_release -si | tr '[:upper:]' '[:lower:]'
fi
}
# If target does not exist, create symlink from source to target.
ensure_symlink_to_target() {
local from="${1:?Missing source}"
local to="${2:?Missing target}"
if [[ -e "${from}" && ! -e "${to}" ]]; then
if ! sudo ln -s "${from}" "${to}"
then
>&2 echo "Error: ${to} still not available after symlink. Aborting."
exit 1
fi
fi
}
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