gem uni -aIx $(gem li --no-versions | grep -v -E "bigdecimal|bundler|cmath|csv|date|dbm|did_you_mean|etc|fcntl|fiddle|fileutils|io-console|ipaddr|json|minitest|net-telnet|openssl|power_assert|psych|rake|rdoc|scanf|sdbm|stringio|strscan|webrick|zlib") gem uni -aIx (gem li --no-versions | grep -v -E "bigdecimal|bundler|cmath|csv|date|dbm|did_you_mean|etc|fcntl|fiddle|fileutils|io-console|ipaddr|json