Bash: Correct way to Iterate over Map

Posted by Lars Tackmann on Stack Overflow See other posts from Stack Overflow or by Lars Tackmann
Published on 2010-04-10T23:10:14Z Indexed on 2010/04/10 23:13 UTC
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In Bash I can create a map (hashtable) with this common construction

hput() {
  eval "$1""$2"='$3'
}

hget() {
  eval echo '${'"$1$2"'#hash}'
}

and then use it like this:

hput capitols France Paris
hput capitols Spain Madrid
echo "$(hget capitols France)"

But how do I best iterate over the entries in the map ?. For instance, in Java I would do:

for (Map.Entry<String, String> entry : capitols.entrySet()) {
  System.out.println("Country " + entry.getKey() + " capital " + entry.getValue());
}

is there a common way of accomplishing something similar in Bash ?.

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