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HOW TO FIX SUB-PROCESS /USR/BIN/DPKG RETURNED AN ERROR CODE (1) IN UBUNTU
March 31, 2019
troubleshootingubuntu
Home » SysAdmin » How to Fix sub-process /usr/bin/dpkg returned an error code
(1) in Ubuntu
Contents
1. Options to Fix sub-process /usr/bin/dpkg returned an error code (1)
1. Method 1: Reconfigure dpkg Database
2. Method 2: Force-Install the Software
3. Method 3: Remove Bad Software Package
4. Method 4: Clean Out Unused Software Packages
5. Method 5: Remove Post Files
6. Method 6: Overwrite Package File
Contents
1. Options to Fix sub-process /usr/bin/dpkg returned an error code (1)
1. Method 1: Reconfigure dpkg Database
2. Method 2: Force-Install the Software
3. Method 3: Remove Bad Software Package
4. Method 4: Clean Out Unused Software Packages
5. Method 5: Remove Post Files
6. Method 6: Overwrite Package File
Introduction
The error message “Sub-process /usr/bin/dpkg returned an error code (1)”
indicates a problem with the package installer. This can happen in Ubuntu after
a failed software installation, or if the installer becomes corrupted.
The key phrase in this error is /usr/bin/dpkg. This refers to the dpkg package
installer for Linux. A package installer is an application that tracks software,
updates, and dependencies. If it is damaged, any new software installation will
cause this error message.
We cover several possible solutions, from easily-solved and straightforward
solutions to more complex processes. This guide will help you resolve the dpkg
returned an error code 1 on an Ubuntu operating system.
Prerequisites
* A user account with sudo privileges
* A terminal window/command-line (Ctrl–Alt–T)
OPTIONS TO FIX SUB-PROCESS /USR/BIN/DPKG RETURNED AN ERROR CODE (1)
METHOD 1: RECONFIGURE DPKG DATABASE
If your package database has become corrupted, reconfiguring it can repair it.
Enter the following command:
sudo dpkg --configure -a
This command reconfigures packages that have been unpacked but not necessarily
installed. An interruption at the wrong time can cause this database to become
corrupt. This is especially helpful if you were running installation and the
process was interrupted.
METHOD 2: FORCE-INSTALL THE SOFTWARE
If Method 1 does not work, you can attempt to fix the dependencies in the
package installer.
Enter the following:
sudo apt-get install -f
The -f option means fix-broken. It repairs any broken dependencies in your
package manager. Broken dependencies occur when a download is interrupted, or
there is a problem with the cached download.
Note: Dependencies are other software packages that are required by the software
you are installing. A package manager helps keep track of dependencies for you.
METHOD 3: REMOVE BAD SOFTWARE PACKAGE
If you know which software caused the errors on your system, you can remove it.
Enter the command and package_name with the name of the software that is causing
the problem:
sudo apt-get remove --purge package_name
The --purge option directs the system to remove config files in addition to
uninstalling. This helps get rid of all traces of the offending software.
METHOD 4: CLEAN OUT UNUSED SOFTWARE PACKAGES
If an old, outdated, or unused package is causing the problem, you can solve the
problem by removing unused software packages.
Enter the following command in the terminal:
sudo apt autoremove
Note: Avoid the next 2 options unless all other methods have failed.
METHOD 5: REMOVE POST FILES
If you know the name of the package that is causing problems, you can delete the
files manually. The installation files are usually located in the
/var/lib/dpkg/info file.
Type in the following command and replace package_name with the name of the
broken software.:
sudo ls -l /var/lib/dpkg/info | grep -i package_name
This will generate a list of all references to the software you installed.
You can then remove them by entering:
sudo mv /var/lib/dpkg/info/package_name.* /tmp
This command moves the files to the /tmp directory, where they cannot affect
your package manager.
Next, update the package manager:
sudo apt-get update
After which you can re-install the broken software again.
METHOD 6: OVERWRITE PACKAGE FILE
If you know the name of the package that is causing a problem, you can force an
overwrite.
Use the following command and replace full_name_of_package with the actual
package name:
sudo dpkg -i --force-overwrite /var/cache/apt/archives/full_name_of_package
Note: If you do not know the actual name of the package, you can search for it
with the following command:
ls /var/cache/apt/archies/*package_name*
Replace package_name with the name of your software. This should return any
instances of that package name. Note the exact filename, and type it into the
previous command.
Conclusion
The dpkg error message indicates that there is a problem with the package
installer, which is commonly caused by an interrupted installation process or a
corrupted database.
By following these steps, you should now have several methods to fix the dpkg
error message and attain a working package installer.
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Dejan Tucakov
Dejan is the Head of Content at phoenixNAP with over 8 years of experience in
Web publishing and technical writing. Prior to joining PNAP, he was Chief Editor
of several websites striving to advocate for emerging technologies. He is
dedicated to simplifying complex notions and providing meaningful insight into
data center and cloud technology.
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