/dev/random

nvm error: Checksums do not match

If you get a Checksums do not match error while trying to do an nvm install on OS X, do a brew install md5sha1sum.

nvm.sh has the following conditionals in nvm_checksum and sha1 on OS X doesn't accept the -q option.

nvm_checksum() {
  local NVM_CHECKSUM
  if nvm_has "sha1sum" && ! nvm_is_alias "sha1sum"; then
    NVM_CHECKSUM="$(command sha1sum "$1" | command awk '{print $1}')"
  elif nvm_has "sha1" && ! nvm_is_alias "sha1"; then
    NVM_CHECKSUM="$(command sha1 -q "$1")"
  elif nvm_has "shasum" && ! nvm_is_alias "shasum"; then
    NVM_CHECKSUM="$(shasum "$1" | command awk '{print $1}')"
  else
    echo "Unaliased sha1sum, sha1, or shasum not found." >&2
    return 2
  fi

  if [ "_$NVM_CHECKSUM" = "_$2" ]; then
    return
  elif [ -z "$2" ]; then
    echo 'Checksums empty' #missing in raspberry pi binary
    return
  else
    echo 'Checksums do not match.' >&2
    return 1
  fi
}