Backup and update not working.

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Backup and update not working.

Postby Gnigma » 2020-09-03 14:12

I keep getting an error message on both of these:

E: Malformed entry 26 in list file /etc/apt/sources.list (Component)
E: The list of sources could not be read.

I don't know what this means, and there are not 26 of anything in any of my sources lists.
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Re: Backup and update not working.

Postby sgosnell » 2020-09-03 14:19

It means line 26 (!) of your /etc/apt/sources.list file. If you post the contents of the file, perhaps someone can find the error. But without that, no one can possibly help you further.
Take my advice, I'm not using it.
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Re: Backup and update not working.

Postby Gnigma » 2020-09-03 14:27

Then there must be a way to get the contents of the file, but I'm telling you, there are not 26 lines in anything I can look at.
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Re: Backup and update not working.

Postby LE_746F6D617A7A69 » 2020-09-03 14:35

Bill Gates: "(...) In my case, I went to the garbage cans at the Computer Science Center and I fished out listings of their operating system."
The_full_story and Nothing_have_changed
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Re: Backup and update not working.

Postby Gnigma » 2020-09-03 14:51

It annoys the hell out of me, too.
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Re: Backup and update not working.

Postby sgosnell » 2020-09-03 14:53

You can get the contents of the file, just like with any other file, by opening it with a text editor or by running in a terminal
Code: Select all
cat /etc/apt/sources.list

Just like you did in one of the threads linked above. You said you cleaned it up, but apparently the cleaning went awry.
Take my advice, I'm not using it.
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Re: Backup and update not working.

Postby Gnigma » 2020-09-03 15:04

Yeah, well, that gives me this:

cat /etc/apt/sources.list
#


# deb cdrom:[Debian GNU/Linux 10.2.0 _Buster_ - Official amd64 NETINST 20191116-09:56]/ buster main

deb http://ftp.us.debian.org/debian/ buster main contrib
deb-src http://ftp.us.debian.org/debian/ buster main contrib

deb http://ftp.us.debian.org/debian/ buster/updates main contrib
deb-src http://ftp.us.debian.org/debian/ buster/updates main contrib

# buster-updates, previously known as 'volatile'
deb http://ftp.us.debian.org/debian/ buster-updates main contrib
deb-src http://ftp.us.debian.org/debian/ buster-updates main contrib

# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.


I still do not see 26 lines.
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Re: Backup and update not working.

Postby sgosnell » 2020-09-03 15:22

Try this. You don't need the source code, so comment those out to save time and bandwidth.
Code: Select all
deb http://ftp.us.debian.org/debian/ buster main contrib
#deb-src http://ftp.us.debian.org/debian/ buster main contrib
deb http://security.debian.org/debian-security/ buster/updates main contrib
#deb-src http://security.debian.org/debian-security/ buster/updates main contrib

# buster-updates, previously known as 'volatile'
deb http://deb.debian.org/debian/ buster-updates main contrib
#deb-src http://deb.debian.org/debian/ buster-updates main contrib 
Get rid of everything else. There may be stray unprintable characters in the file somewhere.
Take my advice, I'm not using it.
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Re: Backup and update not working.

Postby LE_746F6D617A7A69 » 2020-09-03 15:50

sgosnell wrote:Get rid of everything else.
There's a catch in this sentence: most likely the sources.list has been damaged by using wrong editor/text encoding ;)
I would say that it's better to backup the old file and create a completely new one using f.e. the nano editor as root.

Anyway, it would be nice to see the output of:
Code: Select all
xxd -g1 /etc/apt/sources.list
Bill Gates: "(...) In my case, I went to the garbage cans at the Computer Science Center and I fished out listings of their operating system."
The_full_story and Nothing_have_changed
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Re: Backup and update not working.

Postby Gnigma » 2020-09-03 15:57

xxd -g1 /etc/apt/sources.list
00000000: 23 20 0a 0a 0a 23 20 64 65 62 20 63 64 72 6f 6d # ...# deb cdrom
00000010: 3a 5b 44 65 62 69 61 6e 20 47 4e 55 2f 4c 69 6e :[Debian GNU/Lin
00000020: 75 78 20 31 30 2e 32 2e 30 20 5f 42 75 73 74 65 ux 10.2.0 _Buste
00000030: 72 5f 20 2d 20 4f 66 66 69 63 69 61 6c 20 61 6d r_ - Official am
00000040: 64 36 34 20 4e 45 54 49 4e 53 54 20 32 30 31 39 d64 NETINST 2019
00000050: 31 31 31 36 2d 30 39 3a 35 36 5d 2f 20 62 75 73 1116-09:56]/ bus
00000060: 74 65 72 20 6d 61 69 6e 0a 0a 64 65 62 20 68 74 ter main..deb ht
00000070: 74 70 3a 2f 2f 66 74 70 2e 75 73 2e 64 65 62 69 tp://ftp.us.debi
00000080: 61 6e 2e 6f 72 67 2f 64 65 62 69 61 6e 2f 20 62 an.org/debian/ b
00000090: 75 73 74 65 72 20 63 6f 6e 74 72 69 62 20 6d 61 uster contrib ma
000000a0: 69 6e 0a 64 65 62 2d 73 72 63 20 68 74 74 70 3a in.deb-src http:
000000b0: 2f 2f 66 74 70 2e 75 73 2e 64 65 62 69 61 6e 2e //ftp.us.debian.
000000c0: 6f 72 67 2f 64 65 62 69 61 6e 2f 20 62 75 73 74 org/debian/ bust
000000d0: 65 72 20 6d 61 69 6e 20 63 6f 6e 74 72 69 62 0a er main contrib.
000000e0: 0a 64 65 62 20 68 74 74 70 3a 2f 2f 66 74 70 2e .deb http://ftp.
000000f0: 75 73 2e 64 65 62 69 61 6e 2e 6f 72 67 2f 64 65 us.debian.org/de
00000100: 62 69 61 6e 2f 20 62 75 73 74 65 72 2f 75 70 64 bian/ buster/upd
00000110: 61 74 65 73 20 6d 61 69 6e 20 63 6f 6e 74 72 69 ates main contri
00000120: 62 0a 64 65 62 2d 73 72 63 20 68 74 74 70 3a 2f b.deb-src http:/
00000130: 2f 66 74 70 2e 75 73 2e 64 65 62 69 61 6e 2e 6f /ftp.us.debian.o
00000140: 72 67 2f 64 65 62 69 61 6e 2f 20 62 75 73 74 65 rg/debian/ buste
00000150: 72 2f 75 70 64 61 74 65 73 20 6d 61 69 6e 20 63 r/updates main c
00000160: 6f 6e 74 72 69 62 0a 0a 23 20 62 75 73 74 65 72 ontrib..# buster
00000170: 2d 75 70 64 61 74 65 73 2c 20 70 72 65 76 69 6f -updates, previo
00000180: 75 73 6c 79 20 6b 6e 6f 77 6e 20 61 73 20 27 76 usly known as 'v
00000190: 6f 6c 61 74 69 6c 65 27 0a 64 65 62 20 68 74 74 olatile'.deb htt
000001a0: 70 3a 2f 2f 66 74 70 2e 75 73 2e 64 65 62 69 61 p://ftp.us.debia
000001b0: 6e 2e 6f 72 67 2f 64 65 62 69 61 6e 2f 20 62 75 n.org/debian/ bu
000001c0: 73 74 65 72 2d 75 70 64 61 74 65 73 20 6d 61 69 ster-updates mai
000001d0: 6e 20 63 6f 6e 74 72 69 62 0a 64 65 62 2d 73 72 n contrib.deb-sr
000001e0: 63 20 68 74 74 70 3a 2f 2f 66 74 70 2e 75 73 2e c http://ftp.us.
000001f0: 64 65 62 69 61 6e 2e 6f 72 67 2f 64 65 62 69 61 debian.org/debia
00000200: 6e 2f 20 62 75 73 74 65 72 2d 75 70 64 61 74 65 n/ buster-update
00000210: 73 20 6d 61 69 6e 20 63 6f 6e 74 72 69 62 0a 0a s main contrib..
00000220: 23 20 54 68 69 73 20 73 79 73 74 65 6d 20 77 61 # This system wa
00000230: 73 20 69 6e 73 74 61 6c 6c 65 64 20 75 73 69 6e s installed usin
00000240: 67 20 73 6d 61 6c 6c 20 72 65 6d 6f 76 61 62 6c g small removabl
00000250: 65 20 6d 65 64 69 61 0a 23 20 28 65 2e 67 2e 20 e media.# (e.g.
00000260: 6e 65 74 69 6e 73 74 2c 20 6c 69 76 65 20 6f 72 netinst, live or
00000270: 20 73 69 6e 67 6c 65 20 43 44 29 2e 20 54 68 65 single CD). The
00000280: 20 6d 61 74 63 68 69 6e 67 20 22 64 65 62 20 63 matching "deb c
00000290: 64 72 6f 6d 22 0a 23 20 65 6e 74 72 69 65 73 20 drom".# entries
000002a0: 77 65 72 65 20 64 69 73 61 62 6c 65 64 20 61 74 were disabled at
000002b0: 20 74 68 65 20 65 6e 64 20 6f 66 20 74 68 65 20 the end of the
000002c0: 69 6e 73 74 61 6c 6c 61 74 69 6f 6e 20 70 72 6f installation pro
000002d0: 63 65 73 73 2e 0a 23 20 46 6f 72 20 69 6e 66 6f cess..# For info
000002e0: 72 6d 61 74 69 6f 6e 20 61 62 6f 75 74 20 68 6f rmation about ho
000002f0: 77 20 74 6f 20 63 6f 6e 66 69 67 75 72 65 20 61 w to configure a
00000300: 70 74 20 70 61 63 6b 61 67 65 20 73 6f 75 72 63 pt package sourc
00000310: 65 73 2c 0a 23 20 73 65 65 20 74 68 65 20 73 6f es,.# see the so
00000320: 75 72 63 65 73 2e 6c 69 73 74 28 35 29 20 6d 61 urces.list(5) ma
00000330: 6e 75 61 6c 2e 0a 23 20 64 65 62 2d 73 72 63 20 nual..# deb-src
00000340: 68 74 74 70 3a 2f 2f 66 74 70 2e 75 73 2e 64 65 http://ftp.us.de
00000350: 62 69 61 6e 2e 6f 72 67 2f 64 65 62 69 61 6e 2f bian.org/debian/
00000360: 20 62 75 73 74 65 72 20 6d 61 69 6e 20 63 6f 6e buster main con
00000370: 74 72 69 62 0a trib.
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Re: Backup and update not working.

Postby LE_746F6D617A7A69 » 2020-09-03 16:10

The text encoding is correct (plain ASCII) - so the problem is somewhere else.

Side note: can You please learn how to use Code tags?
Bill Gates: "(...) In my case, I went to the garbage cans at the Computer Science Center and I fished out listings of their operating system."
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Re: Backup and update not working.

Postby Head_on_a_Stick » 2020-09-03 16:18

LE_746F6D617A7A69 wrote:I would say that it's better to backup the old file and create a completely new one using f.e. the nano editor as root

^ This.

But text editors are bloat:
Code: Select all
sudo tee /etc/apt/sources.list <<END
deb https://deb.debian.org/debian buster main contrib non-free
deb https://deb.debian.org/debian-security/ buster/updates main contrib non-free
deb https://deb.debian.org/debian buster-updates main contrib non-free
END

Here documents ftw!
Black Lives Matter

Debian buster-backports ISO image: for new hardware support
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Re: Backup and update not working.

Postby LE_746F6D617A7A69 » 2020-09-03 20:31

Head_on_a_Stick wrote:But text editors are bloat

Got You!
If the text editors are so bad / bloated, then how are You writing/editing Your posts without using that bloated editors? hmm? :mrgreen:

But seriously:
That hex dump of sources.list shows that the file is correct - the count of bytes containing newlines (0x0A) is 21 -> 20 text lines + 1 newline at the end of the file -> so how it is possible that apt reports an error at line 26?

Something smells here ...
Bill Gates: "(...) In my case, I went to the garbage cans at the Computer Science Center and I fished out listings of their operating system."
The_full_story and Nothing_have_changed
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Re: Backup and update not working.

Postby CwF » 2020-09-03 21:40

I have navigated to etc/apt/sources.list in Thunar and right clicked to edit as root in Mousepad, but I usually edit the repositories in Synaptic itself. Works fine. No special chants or sacrifices.

OP should check in etc/apt/sources.d and etc/apt/preferences.d for oddities.
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Re: Backup and update not working.

Postby sgosnell » 2020-09-03 23:35

Apt also reads files in etc/apt/sources.list.d. Check if there are iany files in that directory, and if so, please post them. Seeing your history, I would bet a small sum that there are leftover files there, perhaps from the Ubuntu PPAs or other installed packages.
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