myvtm/addin/packaging/DEBIAN/preinst

#!/bin/sh
echo "============== previous installation custom scripts start =============="
user1=$(ps -o user= -p $$ | awk '{print $1}')
echo "user1: $user1"
user2=$(whoami)
echo "user2: $user2"
#user3=$(logname)
#echo "user3: $user3"

papers_dir=/usr/share/wallpapers/deepin
papers_bak_dir=/usr/share/wallpapers/deepin_bak
if [ ! -d $papers_bak_dir ]; then
    mkdir -p ${papers_bak_dir}
fi
cp $papers_dir/* $papers_bak_dir
rm $papers_dir/*

exit 0