Actually fixed contextual and shell processes.

lubuntu/modules/after_bootloader_context.conf

@@ -1,9 +1,5 @@
-# Workaround from ubiquity. Ubuntu's grub will want to look in EFI/ubuntu, so
-# let's make sure it can find something there.
-# This only copies the cfg and doesn't overwrite, this is specifically so
-# this doesn't interfere with an Ubuntu installed on the system already.
 ---
 dontChroot: false
 timeout: 120
 firmwareType:
-    "*": "-for i in $(ls `ROOT`/home/); do rm `ROOT`/home/$i/Desktop/lubuntu-calamares.desktop || exit 0; done"
+    "*": "-rm ${ROOT}/home/${USER}/Desktop/lubuntu-calamares.desktop"

lubuntu/modules/before_bootloader_mkdirs_context.conf

@@ -3,8 +3,8 @@ dontChroot: true
 timeout: 10
 firmwareType:
     efi:
-    - -cp /cdrom/casper/vmlinuz `ROOT`/boot/vmlinuz-$(uname -r)
-    - -mkdir -pv `ROOT`/media/cdrom
-    - -mount --bind /cdrom `ROOT`/media/cdrom
+    - -cp /cdrom/casper/vmlinuz ${ROOT}/boot/vmlinuz-$(uname -r)
+    - -mkdir -pv ${ROOT}/media/cdrom
+    - -mount --bind /cdrom ${ROOT}/media/cdrom
     bios:
-    - -cp /cdrom/casper/vmlinuz `ROOT`/boot/vmlinuz-$(uname -r)
+    - -cp /cdrom/casper/vmlinuz ${ROOT}/boot/vmlinuz-$(uname -r)

lubuntu/modules/shellprocess_bug-LP#1829805.conf

@@ -2,4 +2,4 @@
 dontChroot: false
 timeout: 30
 script:
-    - "touch `ROOT`/boot/initrd.img-$(uname -r)"
+    - "touch ${ROOT}/boot/initrd.img-$(uname -r)"

lubuntu/modules/shellprocess_logs.conf

@@ -2,4 +2,4 @@
 dontChroot: true
 timeout: 30
 script:
-    - calamares-logs-helper `ROOT`
+    - calamares-logs-helper ${ROOT}