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How do I update a single package? As far as man apt-get says apt-get upgrade doesn't take a package/list of packages as parameter:

upgrade

upgrade is used to install the newest versions of all packages currently installed on the system from the sources enumerated in /etc/apt/sources.list. Packages currently installed with new versions available are retrieved and upgraded; under no circumstances are currently installed packages removed, or packages not already installed retrieved and installed. New versions of currently installed packages that cannot be upgraded without changing the install status of another package will be left at their current version. An update must be performed first so that apt-get knows that new versions of packages are available.

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5 Answers 5

up vote 203 down vote accepted

You just need to do apt-get install --only-upgrade <packagename>. This will upgrade only that single package, and only if it is installed.

If you wish to install the package if it doesn't exist, or upgrade it if it does, you may leave out --only-upgrade.

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6  
This upgrades the package alright, but it also installs it if it's not installed, so it's not really an equivalent to upgrading only one package. –  ℝaphink Aug 4 '11 at 11:31
1  
@Raphink: Your comment about the upgrade is right, but install is considered as an equivalent to upgrading one package; install is followed **by one** or more packages desired for installation or upgrading , If you have a better answer, you can answer the question.It would be great. –  Binarylife Aug 4 '11 at 11:56
51  
apt-get install --only-upgrade <packagename> will not install any new packages –  taneli Oct 15 '12 at 11:29
1  
Will the install command upgrade also the dependencies of that single package if necessary? –  Pino May 31 '13 at 8:18
1  
@Pino It will, it makes sense to do so. What if the version you are upgrading to depends on a newer version of another package? You're hosed if you don't upgrade both. This is why install is the right command for this, even if it seems counter-intuitive. –  mattedgod Aug 22 '13 at 19:57

In order to update a single package using the CLI:

sudo apt-get --only-upgrade install <packagename>

e.g., sudo apt-get --only-upgrade install ack

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Skipping **ack**, it is not installed and only upgrades are requested.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
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7  
I get an error with this command: E: Sense only is not understood, try true or false. –  Michael Sep 20 '13 at 18:15

There are two possible ways I can think of:

  1. sudo apt-get install nameofpackage

    This will upgrade the package even if is already installed:

    ~$ sudo apt-get install emesene
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    The following packages will be upgraded:
      emesene
    1 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.
    Need to get 1,486 kB of archives.
    After this operation, 696 kB disk space will be freed.
    Get:1 http://il.archive.ubuntu.com/ubuntu/ natty-updates/universe emesene all 2.11.4+dfsg-0ubuntu1 [1,486 kB]
    
  2. UsingSynaptic Package Manager: Right click→Mark for upgrade:

    enter image description here

    Note: Sometimes it may asks for additional packages or dependencies, it is normal.

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great, so it works after all, thanks –  lurscher May 20 '11 at 16:41
    
Yeah , it should , and sudo apt-get install whatever should do upgrade by itself. –  Binarylife May 20 '11 at 16:44
3  
upgrade doesn't take a package argument. –  ℝaphink Aug 4 '11 at 11:31
    
Right, thanks , it upgrades all of the packages. –  Binarylife Aug 4 '11 at 12:13

For a command line solution that doesn't install the package if it doesn't already exist:

dpkg -s <package> 2>/dev/null | grep -q Status.*installed && sudo apt-get install <package>

This can easily be made into a script, e.g.:

upgrade-package.sh:

#!/bin/bash

[[ -z $1 ]] && { echo "Usage: $(basename $0) package"; exit 1; }

if dpkg -s "$1" 2>/dev/null | grep -q Status.*installed; then
    echo "Attempting to upgrade $1"
    sudo apt-get install "$1"
else
    echo "Package $1 is not installed"
fi
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In my experience on Ubuntu 12.04 LTS, using the command below will not upgrade the package if using a separate PPA -

sudo apt-get --only-upgrade install <packagename>

Similarily, I did not want to run the upgrade command, which would upgrade all packages on my server -

sudo apt-get dist-upgrade

For example, I have PHP 5.3 installed and have added the ondrej PPA to my apt.sources using -

sudo add-apt-repository ppa:ondrej/php5

If I run

sudo apt-get install php5

it will just reinstall PHP 5.3.

I have to, first, determine the version number to upgrade to, using

sudo apt-cache policy php5

This will list all available version numbers. You should find the version number you want to upgrade to, and then copy the whole string that references it. For example, the string for PHP 5.5 on Ubuntu is "5.5.16+dfsg-1+deb.sury.org~precise+2".

Now, you can run the apt-get install command with the specific version number, and voila!

sudo apt-get install php5=5.5.16+dfsg-1+deb.sury.org~precise+2

I only added this because I was unable to find this information anywhere else!

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