Goulven Guillard ha scritto un piccolo e utile script che consente l’uso di apt-get in modalità offline. Il principale vantaggio rispetto ad altri strumenti che permettono l’uso di apt senza connessione internet, è che non ha bisogno di avere installto apt sul computer collegato ad internet (per esempio, si possono scaricare pacchetti da una distribuzione rpm-based, per esempio) .

Per utilizzare Apt-off basta copiare lo script in qualsiasi posizione e renderlo eseguibile:


wget http://repo.intilinux.com/apt-off.tar.gz
tar -zxvf apt-off.tar.gz
chmod +x apt-off


Sorgente Script :

——————————————————————
#!/bin/bash
#
# Copyright 2006, Goulven Guillard.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

BOLD=”\033[1;39m"
NORMAL="\033[0;39m"
GREEN="\033[32m"
RED="\033[31m"
PINK="\033[35m"
BLUE="\033[34m"

##################
## Display help ##
##################
if [[ $1 == -h || $1 == --help ]]; then
echo -e “\033[2J\033[0;0f$BOLD$BLUE""NAME"$NORMAL
echo -e "tapt-offn"
echo -e $BOLD$BLUE"SYNOPSIS"$NORMAL
echo -e $GREEN"tapt-off [option] [packages/dist-upgrade]n”$NORMAL
echo -e $BOLD$BLUE”DESCRIPTION”$NORMAL
echo -e “t$GREEN”"apt-off$NORMAL is a script designed to allow the use of the apt tool on a”
echo -e “tcomputer without any network connection. It proceeds in three steps,”
echo -e “twhich must be done in the directory containing the apt-off file :”
echo -e “t1- packages selection (option -g)”
echo -e “t2- packages download (option -d); this step has to be done on a Linux”
echo -e “tsystem computer (it$BOLD does not need$NORMAL apt, but uses$GREEN wget$NORMAL ; if you only”
echo -e “thave access to a Windows system, you should uncomment one of the two”
echo -e “tdedicated lines at the end of the apt-off file and download all the”
echo -e “tpackages listed in the $GREEN”"offline.packages_url$NORMAL or in the”
echo -e “t$GREEN”"offline.packages_list$NORMAL files by hand…) with an internet connection”
echo -e “t3- packages installation (option -x)n”
echo -e $BOLD$BLUE”WARNING”$NORMAL
echo -e $BOLD$RED”tCAUTION :$NORMAL the installation of packages and the use of the dist-upgrade”
echo -e “toption can pose some risks. You are strongly encouraged to”
echo -e “tsimulate these operations with apt-get before to use apt-off.”
echo -e “tThe author cannot be considered as responseable for any problem.n”
fi

##########################
## Display options ##
##########################
if [[ $1 == -h || $1 == --help || $1 == -o || $1 == --options ]]; then
echo -e $BOLD$BLUE”OPTIONS”$NORMAL
echo -e $GREEN”t-c$NORMAL ou$GREEN –configure$NORMAL”
echo -e “tDownload apt configuration files.n”
echo -e $GREEN”t-d$NORMAL ou$GREEN –download$NORMAL”
echo -e “tDownload packages. This option has to be used on a Linux system”
echo -e “twith an internet connection.$BOLD$RED Don’t forget the offline.packages”
echo -e “tfile !!!$NORMALn”
echo -e $GREEN”t-g$NORMAL or$GREEN –generate$BLUE [package1 package2 ...]$NORMAL or$BLUE [dist-upgrade]$NORMAL”
echo -e “tGenerate packages list, stored in the $BLUE offline.packages$NORMAL file.n”
echo -e $GREEN”t-h$NORMAL or$GREEN –help”$NORMAL
echo -e “tPrint this help.n”
echo -e $GREEN”t-o$NORMAL or$GREEN –options$NORMAL”
echo -e “tDisplay options.n”
echo -e $GREEN”t-x$NORMAL or$GREEN –extract$BLUE [package1 package2 ...]$NORMAL or$BLUE [dist-upgrade]$NORMAL”
echo -e “tExtract and install packages.n”

if [[ $1 == -h || $1 == --help ]]; then
echo -e $BOLD$BLUE”COPYRIGHT”$NORMAL
echo -e “tCopyright 2006, Goulven Guillard.”
echo -e “tThis program is copyleft : copy, modification and diffusion are”
echo -e “tauthorized and encouraged if they are free.”
echo -e “tPlease report bugs at$BLUE lecotegougdelaforce [at] free.fr$NORMAL.n”
fi

##########################################
## Download of apt configuration files ##
##########################################
elif [[ $1 == -c || $1 == --configure ]]; then
if [[ -e config_files/config_apt ]]; then
cd config_files
sh -x ./config_apt
cd ..
else
echo -e “You didn’t execute$GREEN apt-off -p$NORMAL yet, or you have deleted the$VERT config_files$NORMAL directory and the$VERT config_apt$NORMAL file there was in it… Please restart all the procedure.”
fi

##########################
## Packages selection ##
##########################
elif [[ $1 == -g || $1 == --generate ]]; then
if [[ `ls /var/lib/apt/lists/ | grep binary-i386_Packages | wc -l` == 0 ]]; then
if [[ ! -e config_files ]]; then
mkdir config_files
awk ‘($1==”deb”||$1==”deb-src”)&&!match($2,”cdrom”){split($2,A,”/”);for(i=4;i<=NF;++i) print "wget -O "A[3]"_"A[4]"_dists_"$3"_"$i"_binary-i386_Packages.gz "$2"dists/"$3"/"$i"/binary-i386/Packages.gz"}' < /etc/apt/sources.list > config_files/config_apt
echo -e “WARNING : Your computer isn’t correctly configured in order to use the apt tool.”
echo -e “This program will configure it for you. You now have to execute the$VERT apt-off -c$NORMAL”
echo -e “command on a computer with an internet connexion. The configuration will end”
echo -e “automatically next time you will use apt-off.”
exit
elif [[ `ls config_files | grep gz | wc -l` > 0 ]]; then
sudo cp config_files/*.gz /var/lib/apt/lists/
sudo gunzip /var/lib/apt/lists/*.gz
else
echo -e “Vous devez d’abord exécuter$VERT apt-off -c$NORMAL sur un ordinateur avec internet !”
exit
fi
fi

if [[ -e offline.packages ]]; then
echo “WARNING : The offline.packages file already exists, do you want to overwrite it (if not, the packages will be added to the existing list) ? (y/n)”
read OVERWRITE
fi

if [[ $OVERWRITE == y ]]; then
echo “cd ./deb” > offline.packages
else
echo “cd ./deb” >> offline.packages
fi
if [[ "$#" < 2 ]]; then
echo “WARNING : You have to indicate which packages you want to install,”
echo “or ”dist-upgrade” !!!”
exit
elif [[ $2 == dist-upgrade ]]; then
sudo apt-get -qq –print-uris dist-upgrade > .offline_tmp
else
for ((i=2; i<="$#"; i++ ))
do
sudo apt-get -qq --print-uris install ${!i} >> .offline_tmp
done
fi
awk ‘{print “wget -O ” $2 ” ” $1}’ < .offline_tmp >> offline.packages
echo “cd ..” >> offline.packages

#### Lines to uncomment for Windows :
# awk ‘{print $1}’ < .offline_tmp >> offline.packages_url
# awk ‘{print $2}’ < .offline_tmp >> offline.packages_list

rm -f .offline_tmp

##########################
## Packages download ##
##########################
elif [[ $1 == -d || $1 == --download ]]; then
if [[ ! -e deb ]]; then
mkdir deb
fi
sh -x ./offline.packages

##########################
## Packages extraction ##
##########################
elif [[ $1 == -x || $1 == --extract ]]; then
if [[ ! -e deb/partial ]]; then
PARTIAL_CREATED=true
mkdir deb/partial
else
PARTIAL_CREATED=false
fi
if [[ "$#" < 2 ]]; then
echo “WARNING : You have to indicate which packages you want to install, or ”dist-upgrade” !”
exit
elif [[ $2 == dist-upgrade ]]; then
sudo apt-get -o dir::cache::archives=$PWD/deb/ dist-upgrade
else
for ((i=2; i<="$#"; i++ ))
do
sudo apt-get -o dir::cache::archives=$PWD/deb/ install ${!i}
done
fi
if [[ PARTIAL_CREATED ]]; then
rm -rf deb/partial
fi

##########################
## Display usage rules ##
##########################
else
./apt-off -o

fi
## End of apt-off.

-----------------------------------------------------------

E' possibile a questo utilizzare le istruzioni presenti nell'help in linea di apt-off (./apt-off -h):

Fonte : UbuntuForums

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