Accessing environment variables that don't map to valid shell variable names

Question

I\'m trying to figure out how to sanely and portably (as much as possible) deal with environment variables with names that don\'t map to valid shell variables. It is critica

Answer 1

One unportable approach (Linux-only) is to parse /proc/self/environ:

declare -A environ
while IFS='' read -r -d ''; do
  var=${REPLY%%=*}
  val=${REPLY#*=}
  environ[$var]="$val"
done </proc/self/environ
printf '%q\n' "${environ["Invalid Name"]}"