# System-wide package configuration.
DEFAULTS_FILE="/etc/default/google-chrome"

# sources.list setting for google-chrome updates.
REPOCONFIG="deb http://dl.google.com/linux/deb/ stable main"

APT_GET="`which apt-get 2> /dev/null`"
APT_CONFIG="`which apt-config 2> /dev/null`"

# Parse apt configuration and return requested variable value.
apt_config_val() {
  APTVAR="$1"
  if [ -x "$APT_CONFIG" ]; then
    "$APT_CONFIG" dump | sed -e "/^$APTVAR /"'!d' -e "s/^$APTVAR \"\(.*\)\".*/\1/"
  fi
}

# Install the repository signing key (see also:
# http://www.google.com/linuxrepositories/aboutkey.html)
install_key() {
  APT_KEY="`which apt-key 2> /dev/null`"
  if [ -x "$APT_KEY" ]; then
    "$APT_KEY" add - >/dev/null 2>&1 <<KEYDATA
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.4.2.2 (GNU/Linux)
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---END PGP PUBLIC KEY BLOCK-----
KEYDATA
  fi
}

# Set variables for the locations of the apt sources lists.
find_apt_sources() {
  APTDIR=$(apt_config_val Dir)
  APTETC=$(apt_config_val 'Dir::Etc')
  APT_SOURCES="$APTDIR$APTETC$(apt_config_val 'Dir::Etc::sourcelist')"
  APT_SOURCESDIR="$APTDIR$APTETC$(apt_config_val 'Dir::Etc::sourceparts')"
}

# Add the Google repository to the apt sources.
# Returns:
# 0 - no update necessary
# 1 - sources were updated
# 2 - error
update_sources_lists() {
  if [ ! "$REPOCONFIG" ]; then
    return 0
  fi

  find_apt_sources

  if [ -d "$APT_SOURCESDIR" ]; then
    # Nothing to do if it's already there.
    SOURCELIST=$(grep -H "$REPOCONFIG" "$APT_SOURCESDIR/google-chrome.list" \
      2>/dev/null | cut -d ':' -f 1)
    if [ -n "$SOURCELIST" ]; then
      return 0
    fi

    printf "$REPOCONFIG\n" > "$APT_SOURCESDIR/google-chrome.list"
    if [ $? -eq 0 ]; then
      return 1
    fi
  fi
  return 2
}

# Remove a repository from the apt sources.
# Returns:
# 0 - successfully removed, or not configured
# 1 - failed to remove
clean_sources_lists() {
  if [ ! "$REPOCONFIG" ]; then
    return 0
  fi

  find_apt_sources

  if [ -d "$APT_SOURCESDIR" ]; then
    # TODO(mmoss) For now, completely remove any list files for this package,
    # to make sure old installs are following the current package and
    # repository naming conventions. This can go away once we're happy that
    # dogfooders are all current.
    rm -f "$APT_SOURCESDIR/google-chrome.list" \
          "$APT_SOURCESDIR/google-chrome-beta.list"

    # Check if our package.list has this repo configured.
    SOURCELIST=$(grep -H "$REPOCONFIG" "$APT_SOURCESDIR/google-chrome.list" \
      2>/dev/null | cut -d ':' -f 1)
    if [ -n "$SOURCELIST" ]; then
      sed -i -e "\,$REPOCONFIG,d" "$SOURCELIST"
      if [ $? -ne 0 ]; then
        return 1
      fi
      # Delete file if empty (all comments or whitespace)
      LINECOUNT=$(sed -e '/^[[:space:]]*\(#.*\|$\)/d' "$SOURCELIST" | wc -l)
      if [ "$LINECOUNT" = "0" ]; then
        rm -f "$SOURCELIST"
      fi
    fi
  fi

  return 0
}

# Detect if the repo config was disabled by distro upgrade and enable if
# necessary.
handle_distro_upgrade() {
  if [ ! "$REPOCONFIG" ]; then
    return 0
  fi

  find_apt_sources
  SOURCELIST="$APT_SOURCESDIR/google-chrome.list"
  if [ -r "$SOURCELIST" ]; then
    REPOLINE=$(grep -E "^[[:space:]]*#[[:space:]]*$REPOCONFIG[[:space:]]*# disabled on upgrade to .*" "$SOURCELIST")
    if [ $? -eq 0 ]; then
      sed -i -e "s,^[[:space:]]*#[[:space:]]*\($REPOCONFIG\)[[:space:]]*# disabled on upgrade to .*,\1," \
        "$SOURCELIST"
      LOGGER=$(which logger 2> /dev/null)
      if [ "$LOGGER" ]; then
        "$LOGGER" -t "$0" "Reverted repository modification: $REPOLINE."
      fi
    fi
  fi
}

## MAIN ##
DEFAULTS_FILE="/etc/default/google-chrome"
if [ -r "$DEFAULTS_FILE" ]; then
  . "$DEFAULTS_FILE"
fi

if [ "$repo_add_once" = "true" ]; then
  install_key
  update_sources_lists
  RES=$?
  # Sources update succeeded, so stop trying.
  if [ $RES -ne 2 ]; then
    sed -i -e 's/[[:space:]]*repo_add_once=.*/repo_add_once="false"/' "$DEFAULTS_FILE"
  fi
fi

Leyendo lista de paquetes... Hecho
Creando árbol de dependencias      
Leyendo la información de estado... Hecho
Leyendo la información de estado extendido     
Inicializando el estado de los paquetes... Hecho

Quizás quiso decir: chrome