Jtdcftul

I am seeing errors when I try to install mkusb. Upon repeatedly getting the error, I first purged mkusb using the instructions on this page.

Upon still getting errors upon my next attempt, I repeated the purge and see the following result:

thethirdeyeagain@thethirdeyeagain:~$ sudo apt-get purge mkusb
Reading package lists... Done
Building dependency tree

Reading state information... Done
Package 'mkusb' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 336 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up desktop-file-utils (0.22-1ubuntu5.1) ...
/var/lib/dpkg/info/desktop-file-utils.postinst: 5: /var/lib/dpkg/info/desktop-file-utils.postinst: update-desktop-database: Permission denied
dpkg: error processing package desktop-file-utils (--configure):
subprocess installed post-installation script returned error exit status 126
Errors were encountered while processing:
desktop-file-utils
E: Sub-process /usr/bin/dpkg returned an error code (1)

When I try to install mkusb, I see the following, which is similar to what was occurring before the purge:

thethirdeyeagain@thethirdeyeagain:~$ sudo add-apt-repository universe
'universe' distribution component is already enabled for all sources.
thethirdeyeagain@thethirdeyeagain:~$ sudo add-apt-repository ppa:mkusb/ppa

More info: https://launchpad.net/~mkusb/+archive/ubuntu/ppa
Press [ENTER] to continue or ctrl-c to cancel adding it

gpg: keyring /tmp/tmp9z0r3jqp/secring.gpg' created
gpg: keyring/tmp/tmp9z0r3jqp/pubring.gpg' created
gpg: requesting key 54B8C8AC from hkp server keyserver.ubuntu.com
gpg: /tmp/tmp9z0r3jqp/trustdb.gpg: trustdb created
gpg: key 54B8C8AC: public key "Launchpad PPA for MKUSB" imported
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
OK
thethirdeyeagain@thethirdeyeagain:~$ sudo apt-get update
Ign:1 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:3 http://us.archive.ubuntu.com/ubuntu xenial InRelease

Get:4 http://dl.google.com/linux/chrome/deb stable Release [943 B]

Get:5 http://us.archive.ubuntu.com/ubuntu xenial-updates InRelease [109 kB]

Get:6 http://dl.google.com/linux/chrome/deb stable Release.gpg [819 B]

Get:7 https://deb.nodesource.com/node_4.x xenial InRelease [4,646 B]

Err:6 http://dl.google.com/linux/chrome/deb stable Release.gpg

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E
Hit:8 http://archive.canonical.com/ubuntu xenial InRelease

Hit:9 http://ppa.launchpad.net/mkusb/ppa/ubuntu xenial InRelease

Get:10 http://us.archive.ubuntu.com/ubuntu xenial-backports InRelease [107 kB]
Hit:11 http://ppa.launchpad.net/mystic-mirage/komodo-edit/ubuntu xenial InRelease
Hit:12 http://ppa.launchpad.net/webupd8team/java/ubuntu xenial InRelease

Ign:2 http://www.getdeb.net/ubuntu xenial-getdeb InRelease

Ign:13 http://www.getdeb.net/ubuntu xenial-getdeb Release
Ign:14 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 Packages.diff/Index
Ign:15 http://www.getdeb.net/ubuntu xenial-getdeb/apps i386 Packages.diff/Index
Ign:16 http://www.getdeb.net/ubuntu xenial-getdeb/apps all Packages
Ign:17 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en_US
Ign:18 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en
Ign:19 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 DEP-11 Metadata
Ign:20 http://www.getdeb.net/ubuntu xenial-getdeb/apps DEP-11 64x64 Icons
Ign:21 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 Packages
Ign:22 http://www.getdeb.net/ubuntu xenial-getdeb/apps i386 Packages
Ign:16 http://www.getdeb.net/ubuntu xenial-getdeb/apps all Packages
Ign:17 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en_US
Get:23 http://security.ubuntu.com/ubuntu xenial-security InRelease [109 kB]
Ign:18 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en

Ign:19 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 DEP-11 Metadata

Ign:20 http://www.getdeb.net/ubuntu xenial-getdeb/apps DEP-11 64x64 Icons
Ign:21 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 Packages
Ign:22 http://www.getdeb.net/ubuntu xenial-getdeb/apps i386 Packages
Ign:16 http://www.getdeb.net/ubuntu xenial-getdeb/apps all Packages
Ign:17 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en_US
Ign:18 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en
Ign:19 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 DEP-11 Metadata
Ign:20 http://www.getdeb.net/ubuntu xenial-getdeb/apps DEP-11 64x64 Icons
Ign:21 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 Packages
Ign:22 http://www.getdeb.net/ubuntu xenial-getdeb/apps i386 Packages
Ign:16 http://www.getdeb.net/ubuntu xenial-getdeb/apps all Packages
Ign:17 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en_US
Ign:18 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en
Ign:19 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 DEP-11 Metadata
Ign:20 http://www.getdeb.net/ubuntu xenial-getdeb/apps DEP-11 64x64 Icons
Ign:21 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 Packages
Ign:22 http://www.getdeb.net/ubuntu xenial-getdeb/apps i386 Packages
Ign:16 http://www.getdeb.net/ubuntu xenial-getdeb/apps all Packages
Ign:17 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en_US
Ign:18 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en
Ign:19 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 DEP-11 Metadata
Ign:20 http://www.getdeb.net/ubuntu xenial-getdeb/apps DEP-11 64x64 Icons
Ign:21 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 Packages
Ign:22 http://www.getdeb.net/ubuntu xenial-getdeb/apps i386 Packages
Ign:16 http://www.getdeb.net/ubuntu xenial-getdeb/apps all Packages
Ign:17 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en_US
Ign:18 http://www.getdeb.net/ubuntu xenial-getdeb/apps Translation-en
Ign:19 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 DEP-11 Metadata
Ign:20 http://www.getdeb.net/ubuntu xenial-getdeb/apps DEP-11 64x64 Icons
Err:21 http://www.getdeb.net/ubuntu xenial-getdeb/apps amd64 Packages
403 Forbidden
Fetched 331 kB in 3s (104 kB/s)
Reading package lists... Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://dl.google.com/linux/chrome/deb stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E
W: The repository 'http://archive.getdeb.net/ubuntu xenial-getdeb Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E
E: Failed to fetch http://www.getdeb.net/ubuntu/dists/xenial-getdeb/apps/binary-amd64/Packages 403 Forbidden
E: Failed to fetch http://www.getdeb.net/ubuntu/dists/xenial-getdeb/apps/binary-i386/Packages 403 Forbidden
W: Some index files failed to download. They have been ignored, or old ones used instead.
thethirdeyeagain@thethirdeyeagain:~$ sudo apt-get install mkusb
Reading package lists... Done
Building dependency tree

Reading state information... Done
The following NEW packages will be installed:
mkusb
0 upgraded, 1 newly installed, 0 to remove and 336 not upgraded.
1 not fully installed or removed.
Need to get 0 B/50.2 kB of archives.
After this operation, 193 kB of additional disk space will be used.
Selecting previously unselected package mkusb.
(Reading database ... 223633 files and directories currently installed.)
Preparing to unpack .../mkusb_12.3.2-1ubuntu4_all.deb ...
Unpacking mkusb (12.3.2-1ubuntu4) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160824-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for mime-support (3.59ubuntu1) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up desktop-file-utils (0.22-1ubuntu5.1) ...
/var/lib/dpkg/info/desktop-file-utils.postinst: 5: /var/lib/dpkg/info/desktop-file-utils.postinst: update-desktop-database: Permission denied
dpkg: error processing package desktop-file-utils (--configure):
subprocess installed post-installation script returned error exit status 126
Setting up mkusb (12.3.2-1ubuntu4) ...
Errors were encountered while processing:
desktop-file-utils
E: Sub-process /usr/bin/dpkg returned an error code (1)
thethirdeyeagain@thethirdeyeagain:~$ sudo apt-get install mkusb-nox
Reading package lists... Done
Building dependency tree

Reading state information... Done
mkusb-nox is already the newest version (12.3.2-1ubuntu4).
0 upgraded, 0 newly installed, 0 to remove and 336 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] Y
Setting up desktop-file-utils (0.22-1ubuntu5.1) ...
/var/lib/dpkg/info/desktop-file-utils.postinst: 5: /var/lib/dpkg/info/desktop-file-utils.postinst: update-desktop-database: Permission denied
dpkg: error processing package desktop-file-utils (--configure):
subprocess installed post-installation script returned error exit status 126
Errors were encountered while processing:
desktop-file-utils
E: Sub-process /usr/bin/dpkg returned an error code (1)

Sorry for the wall of text. Please let me know if you would like for me to delete all except a certain portion that is relevant.

I would welcome any suggestions for how to troubleshoot or what else to try.