kill_bundler.sh

#!/bin/bash

GEMSETS=$(find ~/.rvm/gems -maxdepth 1)
VERSION_TO_REMOVE="1.10.6"

for i in ${GEMSETS[@]}
do
  GEMSET=${i##*/}
  if [[ $GEMSET == "gems" || $GEMSET == "cache" ]]; then
    continue
  fi
  echo $GEMSET

  matches=$(bash -lc "rvm use $GEMSET &> /dev/null; gem list | grep '^bundler ($VERSION_TO_REMOVE)$'")

  if [[ $? != 0 ]]; then
    matches=$(bash -lc "rvm use $GEMSET &> /dev/null; gem list | grep '^bundler.*$VERSION_TO_REMOVE'")

    if [[ $? != 0 ]]; then
      echo "$GEMSET does not have $VERSION_TO_REMOVE at all"
    else
      echo $matches
      echo "$GEMSET has $VERSION_TO_REMOVE and other versions"
      bash -lc "rvm use $GEMSET &> /dev/null; yes | gem uninstall bundler -v $VERSION_TO_REMOVE"
    fi
  else
    echo $matches
    echo "$GEMSET has only $VERSION_TO_REMOVE"
  fi

  echo
done