来自Debian_installer的apt-install脚本想着可以离线注入软件包来急救,就翻了翻，但却看不懂，求指教
#!/bin/sh
set -e
. /usr/share/debconf/confmodule
. /lib/chroot-setup.sh
NO_RECOMMENDS=
WITH_RECOMMENDS=
ALLOW_REMOVE=
OPTS=
while :; do
case $1 in
--no-recommends)
NO_RECOMMENDS=1
OPTS="$OPTS $1"
;;
--with-recommends)
WITH_RECOMMENDS=1
OPTS="$OPTS $1"
;;
--allow-remove)
ALLOW_REMOVE=1
OPTS="$OPTS $1"
;;
-*)
logger -t apt-install "Ignored unrecognized option '$1'"
;;
*)
break
;;
esac
shift
done
packages=$@
queue=/var/lib/apt-install/queue
# If we don't have a working mirror yet, only queue the package;
# it will be installed later by the postinst in base-installer
if [ ! -e /target/etc/apt/sources.list ]; then
# Add to list of extra packages to be installed into /target/.
mkdir -p /var/lib/apt-install
touch $queue
for pkg in $packages; do
if ! grep -Eq "^$pkg([[:space:]]|$)" $queue; then
logger -t apt-install "Queueing package $pkg for later installation"
echo "$pkg$OPTS" >> $queue
fi
done
exit 1 # Return error as the package is not ready to be used yet.
fi
REMOUNT_CD=""
if [ -e /var/lib/install-cd.id ] && \
grep -q " /cdrom " /proc/mounts; then
REMOUNT_CD=1
log-output -t apt-install umount /cdrom || true
fi
apt_opts="-q -y"
if [ -z "$ALLOW_REMOVE" ]; then
apt_opts="$apt_opts --no-remove"
fi
if [ "$WITH_RECOMMENDS" ]; then
apt_opts="$apt_opts -o APT::Install-Recommends=true"
elif [ "$NO_RECOMMENDS" ]; then
apt_opts="$apt_opts -o APT::Install-Recommends=false"
fi
ERRCODE=0
in-target sh -c "debconf-apt-progress --no-progress --logstderr -- \
apt-get $apt_opts install $packages" || ERRCODE=$?
if [ "$REMOUNT_CD" ]; then
load-install-cd "/target" || true
fi
if [ "$ERRCODE" != 0 ]; then
exit $ERRCODE
else
exit 0
fi

貌似是对apt-get的一个封装