E: Type '‘deb' is not known on line 56 in source list /etc/apt/sources.list

Thank you for taking the time to report this issue and helping to make Ubuntu better. Examining the information you have given us, this does not appear to be a bug report so we are closing it and converting it to a question in the support tracker. We appreciate the difficulties you are facing, but it would make more sense to raise problems you are having in the support tracker at https://answers.launchpad.net/ubuntu if you are uncertain if they are bugs. For help on reporting bugs, see https://help.ubuntu.com/community/ReportingBugs#When%20not%20to%20file%20a%20bug.

This means that there is an error on line 56 of your /etc/apt/sources.list. Please post the contents of the file.

Open a Terminal from the menu Applications → Accessories → Terminal and type:

gedit /etc/apt/sources.list

using gedit menu open edit → preferences, activate "display line numbers" and copy and paste here the content of the file grabbing some rows before and after the line 56

Thank you

# deb cdrom:[Ubuntu 8.04 _Hardy Heron_ - Release amd64 (20080423)]/ hardy main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

deb http://archive.ubuntu.com/ubuntu/ hardy main restricted
deb-src http://archive.ubuntu.com/ubuntu/ hardy main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://archive.ubuntu.com/ubuntu/ hardy-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu/ hardy-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb http://archive.ubuntu.com/ubuntu/ hardy universe
deb-src http://archive.ubuntu.com/ubuntu/ hardy universe
deb http://archive.ubuntu.com/ubuntu/ hardy-updates universe
deb-src http://archive.ubuntu.com/ubuntu/ hardy-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://archive.ubuntu.com/ubuntu/ hardy multiverse
deb-src http://archive.ubuntu.com/ubuntu/ hardy multiverse
deb http://archive.ubuntu.com/ubuntu/ hardy-updates multiverse
deb-src http://archive.ubuntu.com/ubuntu/ hardy-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://jp.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
# deb-src http://jp.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository. This software is not part of Ubuntu, but is
## offered by Canonical and the respective vendors as a service to Ubuntu
## users.
deb http://archive.canonical.com/ubuntu hardy partner
deb-src http://archive.canonical.com/ubuntu hardy partner

deb http://archive.ubuntu.com/ubuntu/ hardy-security main restricted
deb-src http://archive.ubuntu.com/ubuntu/ hardy-security main restricted
deb http://archive.ubuntu.com/ubuntu/ hardy-security universe
deb-src http://archive.ubuntu.com/ubuntu/ hardy-security universe
deb http://archive.ubuntu.com/ubuntu/ hardy-security multiverse
deb-src http://archive.ubuntu.com/ubuntu/ hardy-security multiverse
‘deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main’
‘deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main’
‘deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main’
# deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main
# deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main
# deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main
deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main

-A-Za-z0-9,./?%&#:_

this is no.1-55
# deb cdrom:[Ubuntu 8.04 _Hardy Heron_ - Release amd64 (20080423)]/ hardy main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

deb http://archive.ubuntu.com/ubuntu/ hardy main restricted
deb-src http://archive.ubuntu.com/ubuntu/ hardy main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://archive.ubuntu.com/ubuntu/ hardy-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu/ hardy-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb http://archive.ubuntu.com/ubuntu/ hardy universe
deb-src http://archive.ubuntu.com/ubuntu/ hardy universe
deb http://archive.ubuntu.com/ubuntu/ hardy-updates universe
deb-src http://archive.ubuntu.com/ubuntu/ hardy-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://archive.ubuntu.com/ubuntu/ hardy multiverse
deb-src http://archive.ubuntu.com/ubuntu/ hardy multiverse
deb http://archive.ubuntu.com/ubuntu/ hardy-updates multiverse
deb-src http://archive.ubuntu.com/ubuntu/ hardy-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://jp.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
# deb-src http://jp.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository. This software is not part of Ubuntu, but is
## offered by Canonical and the respective vendors as a service to Ubuntu
## users.
deb http://archive.canonical.com/ubuntu hardy partner
deb-src http://archive.canonical.com/ubuntu hardy partner

deb http://archive.ubuntu.com/ubuntu/ hardy-security main restricted
deb-src http://archive.ubuntu.com/ubuntu/ hardy-security main restricted
deb http://archive.ubuntu.com/ubuntu/ hardy-security universe
deb-src http://archive.ubuntu.com/ubuntu/ hardy-security universe
deb http://archive.ubuntu.com/ubuntu/ hardy-security multiverse
deb-src http://archive.ubuntu.com/ubuntu/ hardy-security multiverse

and this is raport no.56-62

‘deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main’
‘deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main’
‘deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main’
# deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main
# deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main
# deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main
deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main

Open a Terminal from the menu Applications → Accessories → Terminal and type:

sudo gedit /etc/apt/sources.list

(if the system ask you a password give your user password, you will not see nothing when you type it, then press enter)

Replace the rows

‘deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main’
‘deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main’
‘deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main’

with

deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main
deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main
deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main

or if you don't want packages coming from reacocard-awn put a # in fron of them:

# deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main
# deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main
# deb-src http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main

Save and exit then retry the update

thanks a lot,that solved my question.