Comment 0 for bug 1363697

I'm using Ubuntu 14.10 dev and for some time I'm seeing always the error "sed: -e expression #1, char 6: unknown command: `m'" on upgrading the kernel. On trying to reproduce this here is the complete terminal output:

sworddragon@ubuntu:~$ sudo apt-get install linux-image-generic linux-headers-generic
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  linux-headers-3.16.0-12 linux-headers-3.16.0-12-generic linux-image-3.16.0-12-generic linux-image-extra-3.16.0-12-generic
Suggested packages:
  fdutils linux-doc-3.16.0 linux-source-3.16.0 linux-tools
The following NEW packages will be installed:
  linux-headers-3.16.0-12 linux-headers-3.16.0-12-generic linux-headers-generic linux-image-3.16.0-12-generic linux-image-extra-3.16.0-12-generic linux-image-generic
0 upgraded, 6 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/63.8 MB of archives.
After this operation, 281 MB of additional disk space will be used.
Do you want to continue? [Y/n]
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package linux-image-3.16.0-12-generic.
(Reading database ... 93480 files and directories currently installed.)
Preparing to unpack .../linux-image-3.16.0-12-generic_3.16.0-12.17_amd64.deb ...
Done.
Unpacking linux-image-3.16.0-12-generic (3.16.0-12.17) ...
Selecting previously unselected package linux-headers-3.16.0-12.
Preparing to unpack .../linux-headers-3.16.0-12_3.16.0-12.17_all.deb ...
Unpacking linux-headers-3.16.0-12 (3.16.0-12.17) ...
Selecting previously unselected package linux-headers-3.16.0-12-generic.
Preparing to unpack .../linux-headers-3.16.0-12-generic_3.16.0-12.17_amd64.deb ...
Unpacking linux-headers-3.16.0-12-generic (3.16.0-12.17) ...
Selecting previously unselected package linux-headers-generic.
Preparing to unpack .../linux-headers-generic_3.16.0.12.13_amd64.deb ...
Unpacking linux-headers-generic (3.16.0.12.13) ...
Selecting previously unselected package linux-image-extra-3.16.0-12-generic.
Preparing to unpack .../linux-image-extra-3.16.0-12-generic_3.16.0-12.17_amd64.deb ...
Unpacking linux-image-extra-3.16.0-12-generic (3.16.0-12.17) ...
Selecting previously unselected package linux-image-generic.
Preparing to unpack .../linux-image-generic_3.16.0.12.13_amd64.deb ...
Unpacking linux-image-generic (3.16.0.12.13) ...
Setting up linux-image-3.16.0-12-generic (3.16.0-12.17) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 3.16.0-12-generic /boot/vmlinuz-3.16.0-12-generic
run-parts: executing /etc/kernel/postinst.d/dkms 3.16.0-12-generic /boot/vmlinuz-3.16.0-12-generic
sed: -e expression #1, char 6: unknown command: `m'
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.16.0-12-generic /boot/vmlinuz-3.16.0-12-generic
update-initramfs: Generating /boot/initrd.img-3.16.0-12-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 3.16.0-12-generic /boot/vmlinuz-3.16.0-12-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.16.0-12-generic /boot/vmlinuz-3.16.0-12-generic
Generating grub configuration file ...
Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.
Found linux image: /boot/vmlinuz-3.16.0-12-generic
Found initrd image: /boot/initrd.img-3.16.0-12-generic
Found linux image: /boot/vmlinuz-3.16.0-11-generic
Found initrd image: /boot/initrd.img-3.16.0-11-generic
Found Microsoft Windows XP Professional on /dev/sda2
done
Setting up linux-headers-3.16.0-12 (3.16.0-12.17) ...
Setting up linux-headers-3.16.0-12-generic (3.16.0-12.17) ...
Examining /etc/kernel/header_postinst.d.
run-parts: executing /etc/kernel/header_postinst.d/dkms 3.16.0-12-generic /boot/vmlinuz-3.16.0-12-generic
Setting up linux-headers-generic (3.16.0.12.13) ...
Setting up linux-image-extra-3.16.0-12-generic (3.16.0-12.17) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Not updating initrd symbolic links since we are being updated/reinstalled
(3.16.0-12.17 was configured last, according to dpkg)
Not updating image symbolic links since we are being updated/reinstalled
(3.16.0-12.17 was configured last, according to dpkg)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 3.16.0-12-generic /boot/vmlinuz-3.16.0-12-generic
run-parts: executing /etc/kernel/postinst.d/dkms 3.16.0-12-generic /boot/vmlinuz-3.16.0-12-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.16.0-12-generic /boot/vmlinuz-3.16.0-12-generic
update-initramfs: Generating /boot/initrd.img-3.16.0-12-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 3.16.0-12-generic /boot/vmlinuz-3.16.0-12-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.16.0-12-generic /boot/vmlinuz-3.16.0-12-generic
Generating grub configuration file ...
Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.
Found linux image: /boot/vmlinuz-3.16.0-12-generic
Found initrd image: /boot/initrd.img-3.16.0-12-generic
Found linux image: /boot/vmlinuz-3.16.0-11-generic
Found initrd image: /boot/initrd.img-3.16.0-11-generic
Found Microsoft Windows XP Professional on /dev/sda2
done
Setting up linux-image-generic (3.16.0.12.13) ...