Fixed contextual and shell processes for Ubuntu Studio.

ubuntustudio/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/ubuntustudio-calamares.desktop || exit 0; done"
+    "*": "-rm ${ROOT}/home/${USER}/Desktop/ubuntustudio-calamares.desktop"

ubuntustudio/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)
+    - -cp /cdrom/casper/vmlinuz ${ROOT}/boot/vmlinuz-$(uname -r)
-    - -mkdir -pv @@ROOT@@/media/cdrom
+    - -mkdir -pv ${ROOT}/media/cdrom
-    - -mount --bind /cdrom @@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)

ubuntustudio/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)"

ubuntustudio/modules/shellprocess_logs.conf

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