递归下载ubuntu下的某包安装包及依赖包

#! /bin/bash
basepath=$(cd `dirname $0`; pwd)
pkg="$*"

function getDepends()
{
  ret=`apt-cache depends $1 |grep -i Depends |cut -d: -f2 |tr -d "<>"`
  if [[ -z $ret ]]; then
#    echo '$1 No depends'
    echo -n
  else
    for i in $ret
    do
       if [[ `echo $pkg |grep -e "$i "` ]]; then
#         echo "$i already in set"
         echo -n
       else
         pkg="$pkg $i"
         echo "Download $i ing"
         getDepends $i
       fi
    done
  fi
}

for j in $@
do
  getDepends $j
done

echo $pkg
#apt install $pkg --reinstall -d -y
apt-get download $pkg -d -y

可以递归的把指定包及其依赖包下载回去安装 ， (.deb后缀)

有时候会出现安装失败的情况，这时应注意出错信息，去除该包后继续尝试下载， 其实执行的命令如下

apt-get download python2.7 python2.7-minimal libc6 libgcc1 gcc-6-base libpython2.7-minimal zlib1g libpython2.7-stdlib mime-support libbz2-1.0 libdb5.3 libexpat1 libffi6 libncursesw5 libtinfo5 libreadline6 readline-common dpkg liblzma5 multiarch-support libselinux1 libpcre3 tar libacl1 libattr1 install-info libsqlite3-0 libssl1.0.0 debconf perl-base -d -y