Does 'apt-get update' update the database used by 'apt-cache'?

davidas · 04-19-2004, 08:58 PM

Current installed version of fontconfig is 2.2.2-1.

Code:

apt-get update

I did an update.

Code:

apt-get dist-upgrade

prompts me to update fontconfig. However,

Code:

apt-cache show fontconfig

displays fontconfig version to be 2.2.2-1

Code:

aptitude show ~Astable ~nfontconfig

Code:

aptitude show ~Aunstable ~nfontconfig

Code:

aptitude show ~Aexperimental ~nfontconfig

All the above three display fontconfig version to be 2.2.2-2.

1) Based on aptitude, does that mean fontconfig is version 2.2.2-2 in all distributions?
2) Why the difference in version displayed by apt-cache and aptitude?
3) Does 'apt-get update' update the database used by 'apt-cache'? Cos, 'apt-get dist-upgrade' prompt me to upgrade to higher version than 2.2.2-1, but 'apt-cache show' displays version to be still at 2.2.2-1.

Thanks !

ToniT · 04-19-2004, 09:37 PM

1 &2. apt-cache show should show all the versions available. See 'apt-cache policy fontconfig'
3. yes

davidas · 04-19-2004, 09:46 PM

Thanks for clearing up the issue on apt-cache

Based on (1) above, does it mean fontconfig 2.2.2-2 is now available in all three distributions?

Thanks !

Quote:

Originally posted by ToniT
1 &2. apt-cache show should show all the versions available. See 'apt-cache policy fontconfig'
3. yes

ToniT · 04-19-2004, 11:56 PM

According to this

Code:

toni@mario:~$ apt-cache policy fontconfig
fontconfig:
  Installed: 2.2.2-2
  Candidate: 2.2.2-2
  Version Table:
 *** 2.2.2-2 0
        500 http://perhonen.datanet unstable/main Packages
        500 http://perhonen.datanet testing/main Packages
        100 /var/lib/dpkg/status

It seems that fontconfig exists only in testing and unstable distributions. There is no stable version available.

In comparison

Code:

toni@mario:~$ apt-cache policy w3m
w3m:
  Installed: 0.5-7
  Candidate: 0.5-7
  Version Table:
 *** 0.5-7 0
        500 http://perhonen.datanet unstable/main Packages
        100 /var/lib/dpkg/status
     0.5-6 0
        500 http://perhonen.datanet testing/main Packages
     0.3-2.4 0
        500 http://perhonen.datanet stable/main Packages
        500 http://perhonen.datanet stable/updates/main Packages

Shows that there is version 0.5-7 installed and for unstable,
0.5-6 in testing and 0.3-2.4 in security upgraded stable.

davidas · 04-20-2004, 01:01 AM

My aptitude seems to be working incorrectly. Just a thought. Do I need to edit my /etc/apt/sources.list (I assume aptitude is using this too) prior to using aptitude for checking out packages in other distributions? i.e. do I need to add url for sid in the sources.list if I want to check out packages in experimental?

Code:

aptitude show ~Astable ~ngnome-desktop-environment

Code:

aptitude show ~Aunstable ~ngnome-desktop-environment

Code:

aptitude show ~Aexperimental ~ngnome-desktop-environment

All the three commands above show the same package version (ver49), so I think the error is not restricted to only fontconfig, but all the packages on my system.

Thanks !
PS. Presently I only have URLs in sources.list referencing to 'Sarge' branch.

Quote:

Originally posted by ToniT
According to this

Code:

toni@mario:~$ apt-cache policy fontconfig fontconfig: Installed: 2.2.2-2 Candidate: 2.2.2-2 Version Table: *** 2.2.2-2 0 500 http://perhonen.datanet unstable/main Packages 500 http://perhonen.datanet testing/main Packages 100 /var/lib/dpkg/status

It seems that fontconfig exists only in testing and unstable distributions. There is no stable version available.

In comparison

Code:

toni@mario:~$ apt-cache policy w3m w3m: Installed: 0.5-7 Candidate: 0.5-7 Version Table: *** 0.5-7 0 500 http://perhonen.datanet unstable/main Packages 100 /var/lib/dpkg/status 0.5-6 0 500 http://perhonen.datanet testing/main Packages 0.3-2.4 0 500 http://perhonen.datanet stable/main Packages 500 http://perhonen.datanet stable/updates/main Packages

Shows that there is version 0.5-7 installed and for unstable,
0.5-6 in testing and 0.3-2.4 in security upgraded stable.

ToniT · 04-20-2004, 01:27 AM

Yes, you need to have all the url:s in the /etc/apt/sources.list what you want to be aware of.

To see some packages, you need to first edit the sources.list and then apt-get update. Otherwise the system is not aware of other packages.

See apt_preferences(5) if you want to use repositories of multiple distributions and not to have allways newest version available (unstable/experimental).