Linux Get List of Installed Software for Reinstallation / Restore All the Software Programs

Posted on in Categories Backup, Linux, Shell scripting, Tips last updated August 22, 2006

Hardware and software failures are part of life. And that is why you need to have a backup plan. I have already written about backing up files and MySQL databases. There is no need to backup all installed binaries and software programs. The following tip will not just save your time, but both Debian/Ubuntu and CentOS/Fedora/RHEL based distro can be updated and restored when required.

In order to reinstall or restore your installed software you need to have a list of all installed software. The package manager in Linux can be used to save installed/removed packages on a source system and duplicate those changes on other systems. This post will help you through do the same.

HowTo: Create a Backup list of all installed software on a Debian / Ubuntu Linux

If you are using a Debian or Ubuntu Linux, use the dpkg command to list installed software:
$ dpkg --get-selections
You can store list of installed software to a file called /backup/installed-software.log, enter:
$ dpkg --get-selections > /backup/installed-software.log

HowTo: Create a Backup list of all installed software on a RHEL/Fedora/Suse/CentOS Linux

RPM based distributions (RHEL, Fedora, Redhat, CentOS, Suse Linux) user try the rpm command to get list of all installed software, enter:
$ rpm -qa
OR
$ rpm -qa > /backup/installed-software.log
OR remove software version number (recommended):

rpm -qa --qf "%{NAME}n" | sort > /backup/installed-software.log

How do I restore installed software from a backup List?

Under a Debian/Ubuntu Linux type the following two commands to reinstall all the programs:
# dpkg --set-selections < /backup/installed-software.log
Once list is imported, use the dselect command or other tools to install the packages, enter:
# dselect
Select 'i' for install the software. OR use the following command:
# apt-get dselect-upgrade

Restoring packages on rpm based distro

As far as I know RPM based distro does not offers dpkg kind of facility. But, with a little shell scripting technique you can easily install all software programs:
# LIST="$( cat /backup/installed-software.log )"
If you are using the yum command, type the following bash for loop to install all software:
# for s in $LIST; do yum -y install $s; done

Or try out the following command (HT to gt):
# yum -y install $(cat /backup/installed-software.log)

A Note About RHEL version 4

If you are using RHEL/CentOS v4.x or older, enter:
# for s in $LIST; do up2date -i $s; done

Alternatively, you can use the following up2date command:
# up2date -i $(cat /backup/installed-software.log)

55 comment

  1. better run yum only once:

    rpm -qa > /backup/installed-software.log
    for i in $(cat /backup/installed-software.log) ; do packages+="$i " ; done
    yum install $packages

  2. And if you use Gentoo Linux it would be as follows:

    # cat /var/lib/portage/world
    to get the list of packages

    #emerge -av $(cat /path/to/backupworldfile.txt)

    🙂

  3. nuclearjoker, not to troll out of u

    But whole point of this article is about binary software install/update, IMPO. What you pointing is source compile under gentoo linux

    Please correct me if I am wrong.

    1. @patrick
      Well, Gentoo does compile all packages from sources, yes, but it uses a package management system. And the packages that are installed, are of course, binaries. Just because they were compiled on the system, doesn’t make them any less so. So it is applicable to this.

  4. For me this approach is the same that install from DVD/CDROM with the regular installer. Where are the own files? configuration files, customizated setups, and so on.

  5. Jarl,
    As I said earlier, I am assuming that you are having a backup of /etc config file and other important data to tape or FTP or NAS server. Please read following url. This article is actually follow-up to earlier article.
    Once application installed you can simply restore both data and configuration file.

    Also, consider the CD/DVD media is not up-to-date or does not carries patched version. This method offers out of box protection as both up2date, yum or apt-get installs patched/up-to-date version.

    HTH

  6. Even easier – Fedora users should get their installed packages list automagically updated every day to ‘/var/log/rpmpkgs’ – so, assuming you’ve taken a backup and restored the file the following should suffice:

    yum -y install $(cat /var/log/rpmpkgs)

    1. Just to note. apt-get isn’t Ubuntu only. It’s another frontend to dpkg. On Ubuntu just use dpkg as you would on a Debian system.

  7. When you install with CentOS it puts the list of installed rpms in /root/install.log. If root’s home dir is backed up you’re in business. Although I doubt if it’s update after the install.

    Couldn’t you just create a kickstart disk after install/config and pop it in to reinstall then do a yum update? That would get you closer than just reainstalling packages. Of course all of this is fun to talk about but realistically you’d have backups and you’d just restore… I backup MBRs and files. Throw a live cd in the machine to be restored and from the backup server – dd if=/backup/MBR.bin | ssh “cat | dd of=/dev/hda”

    It’s late and this is from memory but I think that’ll work to restore the MBR across the network. Then format and restore from backup.

  8. There is a huge disadvantage using package lists – it lists a lot packages that one have not chosen to install but are installed because they are dependencies. This makes it veeery tedious to restore if the list is somewhat old or using another distro since dependencies change a lot.

    For debian-based system: Install “debfoster” and run it. After answering a lot of questions about your packages you will have a system without unnecessary packages and a short list of only the packages that you have actively chosen to install.

  9. hi im new to this comp. stuff but i just got 1 question. i installed a game as imess around my laptop i uninstalled the game that i just installed. how can i recover that lost game cause i do not have the disc anymore please help me.

  10. Im new to linex i was viewing utorrent in VNC i closed it by mistake how do i run it again so i can view the current activities

  11. suppose i have 3 software A B and C
    now i have taken backup..in log file..
    now,, I have installed D and E , and removed B
    — If Now i will restore then i will be having A B C D E , but is now a full restore,,,
    ideally,, you need to create a new backuplist of software which has A C D and E
    and then find the diff so that you can get D and E are extra software to remove first and B is need to installed. also,, you need to check that software are available or not, but nice article ,,, can be integrated in Yumex

  12. Nice to see Debian and RPM based distro’s working so peacefully together in this
    gr8 tutorial. I gonna give it a try to put this as an aftercare script in a kickstart file.
    I want to call it a ‘clone kickstart’. 😉

    ks.cfg extracted/edited from a fedora distro /root/anaconda-ks.cfg

    for rpm:

    %post
    for i in $(cat /some_network/kickstart_server/installed-software.log) ; do
    packages+=”$i ” ; done
    yum install -y $packages
    %end

    Just an idea so correct me if i am wrong. That saves time. 😉

  13. i can’t automate the installation process in fedora since it is asking
    “Total Download size:xxMB
    Is this ok [y/n]?”
    every time for all packages i have to give ‘y’ to download the package …………

    is there any other way to automate the process?

    please helpme……………………

  14. But….
    rpm -qa
    Returns the long name, with version number, distro and arch,
    for ex. gnome-utils-libs-2.28.3-1.fc11.i586
    And if you try to install this list on a newer version distro you get
    No gnome-utils-libs-2.28.3-1.fc11.i586 package availabe.

    You shoud use:

    rpm -qa --queryformat "%{NAME}n" > packages.log

    The problem is that I’ve just figure out this, just when I’ve formatted and installed a newer version of Fedora. Is there a trick to use the list I have? because there is no pattern at all to use sed/awk, isn’t it?

  15. This is what I did. It ensures that if the list is long enough to exceed the length limit on a command, it will still work:

    cat installed-software.log | xargs yum -y install

  16. Can be done to allow for upgrading to newer systems be removing arch dependency:

    #!/bin/bash
    
    ## Installed Software Dump
    ## by SwiftLayer.com
    
    ## Dump the list of installed software ##
    yum list installed | awk '{print $1}' > software
    
    
    ## Strip out the arch with sed replace ##
    sed -i 's/.noarch//g' software
    sed -i 's/.i386//g' software
    sed -i 's/.i686//g' software
    
    
    ## Strip out the lines we dont want ## sed -i '/ /d' software
    sed -i '/Installed/d' software
    sed -i '/MySQL/d' software
    sed -i '/mysqlclient/d' software
    sed -i '/ftp/d' software
    sed -i '/dummy-centos-4/d' software
    sed -i '/sendmail-cf/d' software
    sed -i '/sendmail-doc/d' software
    sed -i '/http/d' software
    sed -i '/indexhtml/d' software
    sed -i '/bind/d' software
    sed -i '/postgresql/d' software
    sed -i '/gpg/d' software
    sed -i '/x11/d' software
    sed -i '/caching-nameserver/d' software
    sed -i '/yum/d' software
    sed -i '/da_/d' software
    
    

    Then use this to install on other system:

    #!/bin/bash
    
    ## Yum install from list
    ## by SwiftLayer.com
    
    if [ ! -e "software" ]; then
        echo -e "nnSoftware list missing please make sure file 'software' existsn"
        echo -e "hint: run Installed Software Dump 'getInstalled.sh' on old systemn"
        echo -e "then copy the 'software' file to this systemnn"
        exit
    fi
    
    ## Lets pipe in the software list to a single yum command using 'tr' ##
    yum install $(cat software | tr 'n' ' ')
    
  17. Helo,
    I need a debian command to find which packages I have installed from backports. dkpg –get-selections only gives me the package name.

    Any ideas?

  18. Works GREAT !!! Thanks for a great site with really great stuff for Nix Admins.

    If anyone gets a permission denied error when running the dpkg –get-selections > /etc/installed-applications.log command

    First create your .log file in your chosen folder, give yourself or root full permission to write to the file then run it again.

    What I then did was I added this command to the FTPbackup.sh script also posted on this site so now it does this automatically everyday making sure I have a complete up to date list of applications installed.

  19. Hello,
    Looking for information on how to restore out of rpm/yum upgrade/install (off all installs done on 09/22/2011)

    Thanks
    Joe

  20. Yum’s package management is really abysmal:

    After searching for intensely on the web for ways to retrieve a list of packages that had been manually installed in CentOS 5 (so I can clean up no longer needed apps), I finally had to give up: It’s just not possible – the only thing you can get is useless lists which include gazillion dependencies as if they were programs you had actually ‘installed’.

    In RHEL/CentOS/SL 6.x, the situation has gotten slightly better with yumdb.

    But IMHO you can ONLY _manually_ generate a list if you do
    yumdb search installed_by 0 (lists everything installed by user root, not including things from the initial installation)

    and then remove (by hand) everything that isn’t also in the following list
    – yumdb search reason user (everything that wasn’t installed as part of a dependency. This however also includes everything from the initial installation)

    If you then manually generated a list from those 2 outputs, you should get a list of individual apps that have been installed. To get yum to also remove non-needed dependencies you of course also have to add clean_requirements_on_remove=1 to /etc/yum.conf.

    Alternative:
    If you run an OS with good package management, such as Gentoo things are so much simpler: edit /var/lib/portage/world and remove what you no longer need, then run emerge –depclean and you’re done.

  21. I used the following command to clean up the list of packages generated in fedora:

    sed -r –in-place ‘s/-[0-9][a-z 0-9_.-]*//’ installed-software.log

    This removes any version dist and architecture information leaving only the packagename suitable for yum to consume using the command as suggested by rainmaker:

    cat installed.log |xargs yum -y install

  22. if mount -o remount,exec /tmp && pear channel-update pear.php.net && pear upgrade –force Console_Getopt && pear upgrade –force pear && pear upgrade-all && pecl install json; then
    echo “extension=json.so” > /etc/php.d/json.ini
    mount -o remount,noexec /tmp
    else
    mount -o remount,noexec /tmp
    error_exit “JSON was unable to be installed”
    fi

  23. I run the 1st command and get the list but on the second command
    i get this this error
    [email protected]:~$ dpkg –get-selections > /backup/installed-software.log
    bash: /backup/installed-software.log: No such file or directory”
    but I did make a bckup folder in my home and created a test file called
    installed-software.log before I ran the 2nd command what am I doing wrong?

    1. Kindly delete the “installed-software.log” that you made (I think).

      Home’s directory is actually /home//

      Maybe try doing this command instead:
      dpkg –get-selections > ~/backup/installed-software.log

  24. Hey all, little trouble here, hopefully I didn’t just jack up like I think I might have…
    I created the .log file and saved it, all my docs/files and a febe file for firefox to flash before install of precise pangolin beta, I tell it to:
    # dpkg –set-selections < /backup/installed-software.log after recreating the location and placing the file there where it should be…net result:0 , it didn't pull the packages
    Any ideas on what to do now?

    1. I am thinking I should still be using dpkg but with the refuse downgrade command in conjunction with the set selections command to reinstall all my packages from before, but apparantly I’m not getting that right…

  25. hi
    i have remove vnc RPM`s from my Linux Server & again install it but its not working,when i try to open
    #vino-preferences its not working
    can someome please tell why this heppning

  26. Small suggestion on your rpm backup strategy –

    rpm -qa

    Includes package version numbers, which are subject to change.

    You can strip them with a “simple” modification

    rpm -qa --qf "%{NAME}n" | sort > /backup/installed-software.log

    Restore is the same (careful with the -y):

    yum -y install $(cat /backup/installed-software.log)
  27. Please help
    When I try to update
    Or the installation of any tool
    Always having a this message
    [email protected]:~# apt-get install software-center
    Reading package lists… Done
    Building dependency tree
    Reading state information… Done
    E: Couldn’t find package software-center
    I’ve tried a lot of solutions to no avail

  28. There is another line that should be run before restoring the list to dselect:
    sudo dselect update

    Without this line, about 1000 entries to the list throw an error – not in database.
    After running the dselect update, then bringing the list into dselect, there are only 2 files which are not reloaded. They are not in the Synaptic List and are downloaded from providers. Google Chrome being one of them.

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