End of Life Ruby 3.2 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

ENV.except

ENV.except(*keys) → a_hash

static VALUE
env_except(int argc, VALUE *argv, VALUE _)
{
    int i;
    VALUE key, hash = env_to_hash();

    for (i = 0; i < argc; i++) {
        key = argv[i];
        rb_hash_delete(hash, key);
    }

    return hash;
}

Returns a hash except the given keys from ENV and their values.

Example

ENV                       #=> {"LANG"=>"en_US.UTF-8", "TERM"=>"xterm-256color", "HOME"=>"/Users/rhc"}
ENV.except("TERM","HOME") #=> {"LANG"=>"en_US.UTF-8"}

Ruby version changes

3.0
- ENV.except has been added, which returns a hash excluding the given keys and their values. [Feature #15822]

See also .empty? .fetch .each_value .filter also in 4.1 · 4.0 · 3.4 · 3.3 · 3.1 · 3.0

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