Malformed entry in sources.list after Impish upgrade

Question

There are a lot of answers related somewhat to this question, but doesn't seem to help as I didn't had this error before. This error came after upgrading to Ubuntu Impish from 21.04

$ sudo apt-get update
[sudo] password for kirti: 
E: Malformed entry 2 in list file /etc/apt/sources.list.d/pgdg.list (Suite)
E: The list of sources could not be read.
$ cat /etc/apt/sources.list.d/pgdg.list
deb http://apt.postgresql.org/pub/repos/apt impish-pgdg main
deb http://apt.postgresql.org/pub/repos/apt/
impish-pgdg main
$

I had postgresql installed before update. Though, postgresql works fine I'm not able to perform certain tasks on terminal, let it be a simple update

Can somebody please help me?

pgdg.list:

Also I don't know why by default it is selected as postgresql in ubuntu update.

Can you post the contents of pgdg.list? This will make it easier to spot the error — matigo, Dec 22 '21 at 03:38
Seems like sometime you tried to add the same source a second time...but made a typo. Line 1 is correct. Lines 2+3 say the same thing, but spread across two lines is the error. Simply delete lines 2 and 3. — user535733, Dec 22 '21 at 03:49
Confused what you are trying to say. We cannot see nonverbal cues, so please try to be clear and unambiguous in your writing. Regardless, simply delete lines 2 and 3, then save the file. — user535733, Dec 22 '21 at 03:51
Alternately, you could simply comment those two lines out. Prepend a # on lines 2 and 3, then save. — user535733, Dec 22 '21 at 03:53
Why that source is selected in your Software & Updates control panel is a different question. It's best to keep questions simple. The short answer is that the source is selected because you use it. Unselected sources are disabled (unused). — user535733, Dec 22 '21 at 04:22
Does this answer your question? How do I remove a malformed line from my sources.list? — Organic Marble, Dec 22 '21 at 11:26

score 1 · Accepted Answer · answered Dec 22 '21 at 06:49

You have to rewrite this sources.list file using single long command below:

cat << EOF | sudo tee /etc/apt/sources.list.d/pgdg.list
deb http://apt.postgresql.org/pub/repos/apt impish-pgdg main
deb http://apt.postgresql.org/pub/repos/apt/ impish-pgdg main
EOF

Note that lines 2 and 3 are now one line with deb package type, its url, version and component. So it conforms with normal correct sources.list style format.

Then run sudo apt-get update again.

Malformed entry in sources.list after Impish upgrade

1 Answers1