Updated package_save to use here-documents and save/restore apt keyring

VPS/package_save.sh

@@ -10,7 +10,7 @@ if [ $# -ne 0 ]; then
 	if [ "$2" = here -o "$1" = here ]; then
 		location="."
 	elif [ ! -z "$2" ]; then
-		echo "Second argument can be void or 'here' only"
+		echo "Second argument can only be null or 'here'"
 		exit
 	fi
 fi
@@ -19,45 +19,54 @@ cd $location
 pathName="$name""_$(date +'%Y-%m-%d @ %Hh%M')"
 
 mkdir "$pathName"
-cd "./$pathName"
+cd "$pathName"
 mkdir "./preferences.d"
 
 cp /etc/apt/sources.list .
 cp /etc/apt/preferences.d/my_preferences ./preferences.d/
 cp -r --copy-contents /etc/apt/sources.list.d .
 
-sudo dpkg --get-selections > "manual_package_save"
+dpkg --get-selections > "manual_package_save"
+apt-key exportall > "apt_keys"
 
 a=C4.sh
 
-echo "#! /bin/bash" > $a
-echo "" >> $a
-echo "cd .." >> $a
-echo "rm -r \"$pathName\"" >> $a
+cat <<EOF > "$a"
+#! /bin/bash
+
+cd ..
+rm -r "$pathName"
+
+EOF
 
 chmod u+x "$a"
 
 b="package_restore.sh"
 
-echo "#! /bin/bash" > $b
-echo "" >> $b
-echo 'if [ $(id -u) -ne "0" ]; then' >> $b
-echo '	 echo "Please execute with superuser privileges"' >> $b
-echo "	 exit -1" >> $b
-echo fi >> $b
-echo "" >> $b
-echo cp ./sources.list /etc/apt/sources.list >> $b
-echo cp ./preferences.d/my_preferences /etc/apt/preferences.d/my_preferences >> $b
-echo 'cp -r ./sources.list.d/* /etc/apt/sources.list.d' >> $b
-echo "" >> $b
-echo apt-get update >> $b
-echo apt-get install dselect >> $b
-echo "dpkg --set-selections < "manual_package_save"" >> $b
-echo apt-get dselect-upgrade >> $b
-echo apt-get remove dselect >> $b
+cat <<EOF > "$b"
+#! /bin/bash"
+
+if [ $(id -u) -ne "0" ]; then
+	echo "Please execute with superuser privileges"
+	exit -
+fi
+
+cp ./sources.list /etc/apt/sources.list
+cp ./preferences.d/my_preferences /etc/apt/preferences.d/my_preferences
+cp -r ./sources.list.d/* /etc/apt/sources.list.d'
+
+apt-key add < "apt_keys"
+apt-get update
+apt-get install dselect
+dselect update
+dpkg --set-selections < "manual_package_save"
+apt-get dselect-upgrade -y
+apt-get remove dselect
+
+EOF
 
 chmod u-x "$b"
 
 cd -
 
-exit
+exit