Check for and remove unused PPAs

Question

Since the installation, I have added not too few PPAs to my 15.04 system because I wanted a specific application. But sometimes I have removed that package later again, because it did not work, was not what I really wanted, or just because I don't need it any more. I don't know if that makes a difference, but some repositories were installed with add-apt-repository while others just came by a command that just created the file in /etc/apt/sources.list.d/ manually.

Now how can I check whether I have any packages from a PPA installed and if not, remove it from my software sources? This procedure should automatically work through all PPAs.

Answer 1

Here is a script. Without a parameter, the script lists some infos. With --delete, the list files will be removed, if no packages are installed.

#!/usr/bin/env bash
for f in /etc/apt/sources.list.d/*.list; do
    grep -Po "(?<=^deb\s).*?(?=#|$)" "$f" | while read -r ENTRY ; do
    echo "ENTRY: $ENTRY"

# Sanitize entry line by removing stuff between square brackets
ENTRY=$(echo &quot;$ENTRY&quot; | sed 's/\[.*\] //')

    HOST=$(cut -d/ -f3 &lt;&lt;&lt; &quot;$ENTRY&quot;)

    if [ &quot;ppa.launchpad.net&quot; = &quot;$HOST&quot; ]; then
      USER=$(cut -d/ -f4 &lt;&lt;&lt; &quot;$ENTRY&quot;)
      PPA=$(cut -d/ -f5 &lt;&lt;&lt; &quot;$ENTRY&quot;)
      packageCount=$(sed -e '/^Package:/!d' -e 's/Package: \(.*\)$/\1/g' /var/lib/apt/lists/*&quot;$USER&quot;*&quot;$PPA&quot;*Packages | xargs dpkg -l 2&gt;/dev/null | grep -c '^ii')
      echo &quot;PPA: ppa:$USER/$PPA&quot;
      echo &quot;FILENAME: $f&quot;
      echo &quot;$packageCount package(s) installed&quot;
      if [ &quot;$packageCount&quot; -eq 0 ] &amp;&amp; [ &quot;$1&quot; == &quot;--delete&quot; ]; then
        sudo rm &quot;$f&quot; &amp;&amp; echo &quot;$f deleted&quot;
      fi
      echo
    else 
      USER=$(cut -d/ -f3 &lt;&lt;&lt; &quot;$ENTRY&quot;)
      PPA=$(cut -d/ -f4 &lt;&lt;&lt; &quot;$ENTRY&quot;)
      packageCount=$(sed -e '/^Package:/!d' -e 's/Package: \(.*\)$/\1/g' /var/lib/apt/lists/*&quot;$USER&quot;*Packages | xargs dpkg -l 2&gt;/dev/null | grep -c '^ii')
      echo &quot;REPOSITORY: $USER/$PPA&quot;
      echo &quot;FILENAME: $f&quot;
      echo &quot;$packageCount package(s) installed&quot;
      if [ &quot;$packageCount&quot; -eq 0 ] &amp;&amp; [ &quot;$1&quot; == &quot;--delete&quot; ]; then
        sudo rm &quot;$f&quot; &amp;&amp; echo &quot;$f deleted&quot; 
      fi
      echo
    fi
done
done

Copy the code above in a new file, e.g.:

mkdir -p ~/bin
nano ~/bin/checkPPAs

Make the script executable

chmod +x ~/bin/checkPPAs

And run it with

~/bin/checkPPAs

to list all repositories and the number of installed packages.

Start the script with

~/bin/checkPPAs --delete

to remove the list files.

---

Sample output on my system

ENTRY: http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu vivid main
PPA: ppa:webupd8team/y-ppa-manager
FILENAME: /etc/apt/sources.list.d/webupd8team-ubuntu-y-ppa-manager-vivid.list
3 package(s) installed

ENTRY: http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu vivid main
PPA: ppa:nilarimogard/webupd8
FILENAME: /etc/apt/sources.list.d/nilarimogard-ubuntu-webupd8-vivid.list
5 package(s) installed
ENTRY: http://ppa.launchpad.net/obsproject/obs-studio/ubuntu vivid main
PPA: ppa:obsproject/obs-studio
FILENAME: /etc/apt/sources.list.d/obsproject-ubuntu-obs-studio-vivid.list
1 package(s) installed
ENTRY: http://archive.getdeb.net/ubuntu vivid-getdeb apps
REPOSITORY: archive.getdeb.net/ubuntu vivid-getdeb apps
FILENAME: /etc/apt/sources.list.d/getdeb.list
7 package(s) installed
ENTRY: http://ppa.launchpad.net/psi-plus/ppa/ubuntu vivid main
PPA: ppa:psi-plus/ppa
FILENAME: /etc/apt/sources.list.d/psi-plus-ubuntu-ppa-vivid.list
15 package(s) installed
ENTRY: http://ppa.launchpad.net/libreoffice/ppa/ubuntu vivid main
PPA: ppa:libreoffice/ppa
FILENAME: /etc/apt/sources.list.d/libreoffice-ubuntu-ppa-vivid.list
24 package(s) installed
ENTRY: https://deb.nodesource.com/node_0.12 vivid main
REPOSITORY: deb.nodesource.com/node_0.12 vivid main
FILENAME: /etc/apt/sources.list.d/nodesource.list
1 package(s) installed
ENTRY: http://dl.google.com/linux/chrome/deb/ stable main
REPOSITORY: dl.google.com/linux
FILENAME: /etc/apt/sources.list.d/google-chrome.list
2 package(s) installed
ENTRY: http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu vivid main
PPA: ppa:gnome3-team/gnome3
FILENAME: /etc/apt/sources.list.d/gnome3-team-ubuntu-gnome3-vivid.list
273 package(s) installed
ENTRY: http://ppa.launchpad.net/noobslab/apps/ubuntu vivid main
PPA: ppa:noobslab/apps
FILENAME: /etc/apt/sources.list.d/noobslab-ubuntu-apps-vivid.list
0 package(s) installed
ENTRY: http://ppa.launchpad.net/ubuntuhandbook1/corebird/ubuntu vivid main
PPA: ppa:ubuntuhandbook1/corebird
FILENAME: /etc/apt/sources.list.d/ubuntuhandbook1-ubuntu-corebird-vivid.list
1 package(s) installed
ENTRY: http://ppa.launchpad.net/webupd8team/unstable/ubuntu vivid main
PPA: ppa:webupd8team/unstable
FILENAME: /etc/apt/sources.list.d/webupd8team-ubuntu-unstable-vivid.list
1 package(s) installed
ENTRY: http://download.mono-project.com/repo/debian wheezy main
REPOSITORY: download.mono-project.com/repo
FILENAME: /etc/apt/sources.list.d/mono-xamarin.list
166 package(s) installed
ENTRY: http://ppa.launchpad.net/otto-kesselgulasch/gimp-edge/ubuntu vivid main
PPA: ppa:otto-kesselgulasch/gimp-edge
FILENAME: /etc/apt/sources.list.d/otto-kesselgulasch-ubuntu-gimp-edge-vivid.list
5 package(s) installed
ENTRY: http://ppa.launchpad.net/numix/ppa/ubuntu vivid main
PPA: ppa:numix/ppa
FILENAME: /etc/apt/sources.list.d/numix-ubuntu-ppa-vivid.list
3 package(s) installed
ENTRY: http://ppa.launchpad.net/webupd8team/atom/ubuntu vivid main
PPA: ppa:webupd8team/atom
FILENAME: /etc/apt/sources.list.d/webupd8team-ubuntu-atom-vivid.list
1 package(s) installed
ENTRY: https://packages.graylog2.org/repo/debian/ trusty 1.0
REPOSITORY: packages.graylog2.org/repo
FILENAME: /etc/apt/sources.list.d/graylog.list
3 package(s) installed
ENTRY: http://ppa.launchpad.net/ubuntu-mate-dev/ppa/ubuntu vivid main
PPA: ppa:ubuntu-mate-dev/ppa
FILENAME: /etc/apt/sources.list.d/ubuntu-mate-dev-ubuntu-ppa-vivid.list
0 package(s) installed
ENTRY: http://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu vivid main
PPA: ppa:gnome3-team/gnome3-staging
FILENAME: /etc/apt/sources.list.d/gnome3-team-ubuntu-gnome3-staging-vivid.list
268 package(s) installed
ENTRY: http://debian.koha-community.org/koha stable main
REPOSITORY: debian.koha-community.org/koha stable main
FILENAME: /etc/apt/sources.list.d/koha.list
0 package(s) installed
ENTRY: http://ppa.launchpad.net/pgavin/ghdl/ubuntu trusty main
PPA: ppa:pgavin/ghdl
FILENAME: /etc/apt/sources.list.d/pgavin-ubuntu-ghdl-vivid.list
0 package(s) installed
ENTRY: http://ppa.launchpad.net/ubuntu-mate-dev/vivid-mate/ubuntu vivid main
PPA: ppa:ubuntu-mate-dev/vivid-mate
FILENAME: /etc/apt/sources.list.d/ubuntu-mate-dev-ubuntu-vivid-mate-vivid.list
3 package(s) installed
ENTRY: http://ppa.launchpad.net/webupd8team/sublime-text-3/ubuntu vivid main
PPA: ppa:webupd8team/sublime-text-3
FILENAME: /etc/apt/sources.list.d/webupd8team-ubuntu-sublime-text-3-vivid.list
1 package(s) installed
ENTRY: http://ppa.launchpad.net/webupd8team/java/ubuntu vivid main
PPA: ppa:webupd8team/java
FILENAME: /etc/apt/sources.list.d/webupd8team-ubuntu-java-vivid.list
1 package(s) installed
ENTRY: http://dl.google.com/linux/chrome/deb/ stable main
REPOSITORY: dl.google.com/linux
FILENAME: /etc/apt/sources.list.d/google.list
2 package(s) installed
ENTRY: http://dl.google.com/linux/chrome/deb/ stable main
REPOSITORY: dl.google.com/linux
FILENAME: /etc/apt/sources.list.d/google-chrome-beta.list
2 package(s) installed

Answer 2

I don't know of an automatic way, but this method is fairly quick:

1. Start synaptic package manager and input your password when prompted

2. In the left column toward the bottom, click on Origin

All the ppas on your system will now be listed at the top of the left column. You can click down the list and see if any software is installed from each. (if there is, there will be a green box by the package name in the right column). If there are many packages from the ppa (too many to see on the screen at once), you can click on the S at the top of the right column to sort them by status.

NOTE: If you have any unused ppas:

1. Click Settings in the top menu
2. Then Repositories
3. Software and Updates window will be displayed.
4. From this window you can remove the unused ppas from the Other Software tab.

Answer 3

After seeing the accepted answer having a crucial error, I had to fix it and post it here.

A.B's answer iterates over the entries in each list file and if ANY of the entries in that file has 0 packages installed on the system, regardless of how many entries have packages, it removes the entire file.

It also completely disregards any entry that doesn't match a predefined format. It will not take them into account.

Also the script works with the entries matched. It leaves the empty files untouched.

So I fixed the script like so:

#!/usr/bin/env bash
for f in /etc/apt/sources.list.d/*.list; do
    fileTotal=0
    echo "FILENAME: $f"

while read -r ENTRY ; do
    echo "ENTRY: $ENTRY"

    # Sanitize entry line by removing stuff between square brackets
    ENTRY=$(echo "$ENTRY" | sed 's/\[.*\] //')

    HOST=$(cut -d/ -f3 <<< "$ENTRY")

    if [ "ppa.launchpad.net" = "$HOST" ]; then
      USER=$(cut -d/ -f4 <<< "$ENTRY")
      PPA=$(cut -d/ -f5 <<< "$ENTRY")
      packageCount=$(awk '$1=="Package:" {if (a[$2]++ == 0) {system("dpkg -l "$2)}}' /var/lib/apt/lists/*"$USER"*"$PPA"*Packages 2>/dev/null | awk '/^ii/' | wc -l)
    else 
      USER=$(cut -d/ -f3 <<< "$ENTRY")
      PPA=$(cut -d/ -f4 <<< "$ENTRY")
      packageCount=$(awk '$1=="Package:" {if (a[$2]++ == 0) {system("dpkg -l "$2)}}' /var/lib/apt/lists/*"$USER"*Packages 2>/dev/null | awk '/^ii/' | wc -l)
    fi

    ((fileTotal+=packageCount))
    printf '\t%s\n' "REPOSITORY: $USER/$PPA"
    printf '\t%s\n' "$packageCount package(s) installed"
    echo
done < <(grep -Po "(?<=^deb\s).*?(?=#|$)" "$f")
unrecognizedCount=$(grep -Pv "(?=^deb\s)|(?=^#).*" "$f" | grep -Pc "[^\s]")
unrecognizedCount=0
while read -r ENTRY ; do
    ((unrecognizedCount++))
    printf '\t%s\n' "Unrecognized entry: $ENTRY"
done < <(grep -Pv "(?=^deb\s)|(?=^#).*" "$f" | grep -P "[^\s]")

echo "$fileTotal packages installed"
echo "$unrecognizedCount entries unrecognized"

if [ "$fileTotal" -eq 0 ] && [ "$unrecognizedCount" -eq 0 ]; then
  if [ "$1" == "--delete" ]; then
      sudo rm "$f"
      sudo rm "$f".*
      echo "$f deleted"
  else
      echo "Deletable"
  fi
fi

echo "----------------------------"
done

The usage is exactly the same except --delete option only deletes a file if there's no entry with any installed packages and no unrecognized entries. Blank and commented lines don't count as entries.

Even having considered everything I can, this is still not tested, safe script to run with sudo privileges. Please backup everything in the /etc/apt/sources.list.d directory.