मैं Ubuntu 11.04 का उपयोग कर रहा हूं। अपडेट मैनेजर को एक बार नई रिलीज़ 'वनिरिक' मिली, और जब भी मैं ssh का उपयोग करता हूं, तब भी यह स्क्रीन दिखाता है:
Welcome to Ubuntu 11.04 (GNU/Linux 2.6.38-14-generic x86_64)
* Documentation: https://help.ubuntu.com/
0 packages can be updated.
0 updates are security updates.
New release 'oneiric' available.
Run 'do-release-upgrade' to upgrade to it.
Last login: Wed Apr 25 16:22:48 2012 from ***
लेकिन मैंने तब अपग्रेड नहीं किया, और मेरे उपयुक्त स्रोतों को बदल दिया। और अब मैं 'वनैरिक' में अपग्रेड नहीं कर सकता। do-relase-upgrade
दिखाता है:
$ sudo do-release-upgrade
Checking for a new ubuntu release
No new release found
$
और apt-get dist-upgrade
दिखाता है:
$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
$
मैं अपने सभी पैकेजों को सफलतापूर्वक अपडेट कर सकता हूं।
Source.list की फ़ाइल सामग्री:
$ cat /etc/apt/sources.list
## See sources.list(5) for more information, especialy
# Remember that you can only use http, ftp or file URIs
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty main universe restricted multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty main universe restricted multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-security universe main multiverse restricted
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-security universe main multiverse restricted
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-updates universe main multiverse restricted
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-updates universe main multiverse restricted
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-backports universe main multiverse restricted
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-backports universe main multiverse restricted
# deb http://ubuntu.dormforce.net/ubuntu/ lucid main universe restricted multiverse
# deb-src http://ubuntu.dormforce.net/ubuntu/ lucid main universe restricted multiverse
# deb http://ubuntu.dormforce.net/ubuntu/ lucid-security universe main multiverse restricted
# deb-src http://ubuntu.dormforce.net/ubuntu/ lucid-security universe main multiverse restricted
# deb http://ubuntu.dormforce.net/ubuntu/ lucid-updates universe main multiverse restricted
# deb-src http://ubuntu.dormforce.net/ubuntu/ lucid-updates universe main multiverse restricted
# CDROMs are managed through the apt-cdrom tool.
# deb http://archive.canonical.com lucid partner
# deb http://archive.canonical.com lucid-security partner
# deb http://archive.canonical.com lucid-updates partner
# deb-src http://archive.canonical.com lucid partner
# deb-src http://archive.canonical.com lucid-security partner
# deb-src http://archive.canonical.com lucid-updates partner
#medibuntu repo
# deb http://packages.medibuntu.org/ lucid free non-free
# deb-src http://packages.medibuntu.org/ lucid free non-free
# deb http://extras.ubuntu.com/ubuntu maverick main #Third party developers repository
deb http://mirrors.sohu.com/ubuntu/ natty main restricted multiverse universe
deb-src http://mirrors.sohu.com/ubuntu/ natty main universe restricted multiverse #Added by software-properties
deb http://security.ubuntu.com/ubuntu/ natty-security universe main multiverse restricted
deb-src http://mirrors.sohu.com/ubuntu/ natty-security universe main multiverse restricted
deb http://mirrors.sohu.com/ubuntu/ natty-updates universe main multiverse restricted
deb-src http://mirrors.sohu.com/ubuntu/ natty-updates universe main multiverse restricted
/ Etc / अपडेट-मैनेजर / मेटा-रिलीज़ की फ़ाइल सामग्री:
$ cat /etc/update-manager/meta-release
# default location for the meta-release file
[METARELEASE]
URI = http://changelogs.ubuntu.com/meta-release
URI_LTS = http://changelogs.ubuntu.com/meta-release-lts
URI_UNSTABLE_POSTFIX = -development
URI_PROPOSED_POSTFIX = -proposed
इससे क्या समस्या हो सकती है?
update-manager-core
स्थापित कर चुका हूँ , और prompt=normal
। मैं सफलतापूर्वक अपडेट कर सकता हूं, लेकिन केवल डिस-अपग्रेड का अगला संस्करण नहीं मिल सकता है।
/etc/update-manager/meta-release
?