Re: [DNG] apt-get vs. aptitude ?

Sat, 16 Apr 2016 03:14:14 -0700 

On 16/04/16 09:46, Dave Turner wrote:

On 15/04/16 22:25, dev wrote:


On 04/15/2016 03:36 PM, Linux O'Beardly wrote:

For what it's worth, much of the apt vs aptitude is preference and
opinion.  However, aptitude does bit better of a job resolving
dependencies and preventing them from breaking your system.



Yes, That's what I've always read so I have always used aptitude but 
in this instance I have packages that will not upgrade via aptitude. 
I mention this case specifically as the Debian docs[1] say "aptitude 
is the recommended package manager for Debian".



I post this question with the intent to investigate why I might need 
to familiarize myself more with APT as it's evident there are use 
cases where aptitude cannot get the job done. I have struggled with 
situations similar to this only rarely and could have possibly saved 
my self some time knowing the nuances of APT (Debian indeed has one 
of the most diverse set of package management tools around). With 
that in mind, consider the following on this Debian Wheezy based 
system (apologies in advance for the length of this post, but it 
seems pertinent to include)...



#
# apt-get upgrade  <--<<  kernel 2.6.32 will NOT install, updates will
#
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages have been kept back:
  proxmox-ve-2.6.32
The following packages will be upgraded:

  base-files libnvpair1 libpve-common-perl libuutil1 libwbclient0 
libzfs2 libzpool2 openssh-client openssh-server samba-common smbclient

  ssh tzdata
13 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
Need to get 8975 kB of archives.
After this operation, 1438 kB of additional disk space will be used.
Do you want to continue [Y/n]?


#
# apt-get dist-upgrade <--<< kernel will install, updates will
#
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following NEW packages will be installed:
  pve-kernel-2.6.32-45-pve
The following packages will be upgraded:

  base-files libnvpair1 libpve-common-perl libuutil1 libwbclient0 
libzfs2 libzpool2 openssh-client openssh-server proxmox-ve-2.6.32

  samba-common smbclient ssh tzdata
14 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 46.2 MB of archives.
After this operation, 1438 kB of additional disk space will be used.
Do you want to continue [Y/n]?


#
# aptitude upgrade  <--<< kernel will install, updates will NOT
#
Resolving dependencies...
The following NEW packages will be installed:
  pve-kernel-2.6.32-45-pve{a}
The following packages will be upgraded:

  base-files libnvpair1 libpve-common-perl libuutil1 libwbclient0 
libzfs2 libzpool2 openssh-client openssh-server proxmox-ve-2.6.32

  samba-common smbclient ssh tzdata
The following packages are RECOMMENDED but will NOT be installed:
  openssh-blacklist openssh-blacklist-extra samba-common-bin
14 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 46.2 MB of archives. After unpacking 1438 kB will be used.
Do you want to continue? [Y/n/?]


#
# aptitude safe-upgrade <--<< kernel will install, updates will NOT
#
Resolving dependencies...
The following NEW packages will be installed:
  pve-kernel-2.6.32-45-pve{a}
The following packages will be upgraded:

  base-files libnvpair1 libpve-common-perl libuutil1 libwbclient0 
libzfs2 libzpool2 openssh-client openssh-server proxmox-ve-2.6.32

  samba-common smbclient ssh tzdata
The following packages are RECOMMENDED but will NOT be installed:
  openssh-blacklist openssh-blacklist-extra samba-common-bin
14 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 46.2 MB of archives. After unpacking 1438 kB will be used.
Do you want to continue? [Y/n/?]


#
# aptitude full-upgrade <--<< kernel will install, updates will NOT
#
The following NEW packages will be installed:
  pve-kernel-2.6.32-45-pve{a}
The following packages will be upgraded:

  base-files libnvpair1 libpve-common-perl libuutil1 libwbclient0 
libzfs2 libzpool2 openssh-client openssh-server proxmox-ve-2.6.32

  samba-common smbclient ssh tzdata
The following packages are RECOMMENDED but will NOT be installed:
  openssh-blacklist openssh-blacklist-extra samba-common-bin
14 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 46.2 MB of archives. After unpacking 1438 kB will be used.
Do you want to continue? [Y/n/?]


[1] https://www.debian.org/doc/manuals/debian-faq/ch-uptodate.en.html
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I use apt-get upgrade and apt-get dist-upgrade.

For anything that apt-get refuses to do - such as your example where 
the kernel has been kept back - I do sudo aptitude which makes it very 
easy to investigate what is going on.
For the 'RECOMMENDED but will NOT be installed' aptitude will let you 
install them if you want to.
I rarely install anything that is 'RECOMMENDED'. Sometimes that causes 
problems, mainly it doesn't.


DaveT
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Following on from Didier let me make it clear, when I use aptitude it is 
only the Curses User Interface that I use, and then only to work out 
what apt-get is refusing to upgrade and then making aptitude do it (or 
not...). I dislike synaptic, but for the OP let me recommend using 
aptitude and synaptic for dealing with the above problems and see if 
they help you as much they help me and Didier!


DaveT
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