#!/bin/sh##   ti processor sdk linux am335x evm /bin/setup-package-install.sh hacking# 说明：#     本文主要对TI的sdk中的setup-package-install.sh脚本进行解读，是为了了解# 其工作机制。##                                      2016-4-16 深圳 南山平山村 曾剑锋# This distribution contains contributions or derivatives under copyright# as follows:## Copyright (c) 2010, Texas Instruments Incorporated# All rights reserved.## Redistribution and use in source and binary forms, with or without# modification, are permitted provided that the following conditions# are met:# - Redistributions of source code must retain the above copyright notice,#   this list of conditions and the following disclaimer.# - Redistributions in binary form must reproduce the above copyright#   notice, this list of conditions and the following disclaimer in the#   documentation and/or other materials provided with the distribution.# - Neither the name of Texas Instruments nor the names of its#   contributors may be used to endorse or promote products derived#   from this software without specific prior written permission.## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.cwd=`dirname $0`. $cwd/common.shentry_header() {cat << EOF-------------------------------------------------------------------------------setup package scriptThis script will make sure you have the proper host support packages installedThis script requires administrator priviliges (sudo access) if packages are to be installed.-------------------------------------------------------------------------------EOF}exit_footer() {cat << EOF--------------------------------------------------------------------------------Package verification and installation successfully completed--------------------------------------------------------------------------------EOF}cwd=`dirname $0`. $cwd/common.shentry_headerpackages_to_install="xinetd tftpd nfs-kernel-server minicom build-essential libncurses5-dev autoconf automake"get_host_type host# Starting with Ubuntu 14.04 the package name for uboot-mkimage has changed# to u-boot-toolsif [ "$host" = "trusty" ]; then    packages_to_install="$packages_to_install u-boot-tools"else    packages_to_install="$packages_to_install uboot-mkimage"ficmd="sudo apt-get install "# 合成需要安装的工具包# Check and only install the missing packagesfor i in $packages_to_install; do    is_it_installed=`dpkg-query -l $i 2>/dev/null`    if [ "$?" -ne "0" ]; then        needs_installation=`echo $needs_installation`" "$i        new_cmd=`echo $cmd`" "$i    # 每次将需要安装的包加载当前的cmd字符串后面        cmd=$new_cmd    fidoneif [ "$needs_installation" = "" ]; then    echo "System has required packages!"else    echo "System requires packages $needs_installation to be installed"    echo "Installation requires you to have administrator priviliges (sudo access) "    echo "on your host. Do you have administrator privilieges?"    # Force the user to answer.  Maybe the user does not want to continue    while true;    do        read -p "Type 'y' to continue or 'n' to exit the installation: " REPLY        if [ "$REPLY" = 'y' -o "$REPLY" = 'n' ]; then            break;        fi    done    if [ "$REPLY" = 'n' ]; then        echo "Installation is aborted by user"        exit 1    fi    # 执行并安装程序    echo "Performing $cmd"    $cmd    check_statusfi# Print the exit statement to the consoleexit_footer