curl is not working on Ubuntu 18.04 LTS
Solution 1
This problem is common in multiple packages in ubuntu recent LTS. Preinstalled packages have a possible error in version convention because "18.04" and other strings referencing repo are considering as part of the package version and not reference to the repo.
The workaround is uninstall preinstalled dependency and then reinstall. After that, you can install cURL.
apt remove -y libcurl4
apt install -y libcurl4 curl
Other packages with that problem are okular and libsdl2, and the solution is the same, track problematic dependencies, remove and reinstall.
Also, you can use apt
downgrade mechanism (thus, is not necessary to uninstall packages that depend of libcurl4).
apt install -y libcurl4=7.58.0-2ubuntu3
apt install -y curl
Solution 2
Try to use
sudo apt install libcurl4-openssl-dev
If you get any errors, try the commands below and then the above command again.
sudo apt update
sudo apt remove libcurl4
Solution 3
Install curl from source. That worked for me.
git clone https://github.com/curl/curl.git
cd curl
./buildconf
./configure
make
make test # optional
sudo make install
Solution 4
To start a clean slate first clean you packages:
sudo apt autoremove
sudo apt remove libcurl4
Then you install libcurl4 and curl
apt install -y libcurl4 curl
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Joseph-L-S
Updated on September 18, 2022Comments
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Joseph-L-S over 1 year
I can't fetch content from the web using `curl. I tried to install it and got the output below:
Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies. curl : Depends: libcurl4 (= 7.58.0-2ubuntu3) but it is not going to be installed E: Unable to correct problems, you have held broken packages.
I've checked for held packages both with
sudo apt-mark showheld
anddpkg -l | grep ^h
, but I get no results either way.Also, when I attempt to install
libcurl4
, it almost breaks my system, since it attempts to remove these packages:libcurl3 mongodb-enterprise mongodb-enterprise-server mongodb-enterprise-tools msodbcsql msodbcsql17 mssql-tools php7.1-curl r-base r-base-core r-base-dev r-base-html r-cran-boot r-cran-class r-cran-codetools r-cran-foreign r-cran-getopt r-cran-kernsmooth r-cran-lattice r-cran-littler r-cran-mass r-cran-matrix r-cran-mgcv r-cran-nlme r-cran-nnet r-cran-rpart r-cran-spatial r-cran-survival r-recommended slack-desktop virtualbox-5.2
Edit
This is the output of
cat /etc/apt/sources.list
:# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://gb.archive.ubuntu.com/ubuntu/ bionic main restricted deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://gb.archive.ubuntu.com/ubuntu/ bionic-updates main restricted deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic-updates main restricted ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://gb.archive.ubuntu.com/ubuntu/ bionic universe deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic universe deb http://gb.archive.ubuntu.com/ubuntu/ bionic-updates universe deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://gb.archive.ubuntu.com/ubuntu/ bionic multiverse deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic multiverse deb http://gb.archive.ubuntu.com/ubuntu/ bionic-updates multiverse deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic-updates multiverse ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. # deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. deb http://archive.canonical.com/ubuntu bionic partner deb-src http://archive.canonical.com/ubuntu bionic partner deb http://security.ubuntu.com/ubuntu bionic-security main restricted deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted deb http://security.ubuntu.com/ubuntu bionic-security universe deb-src http://security.ubuntu.com/ubuntu bionic-security universe deb http://security.ubuntu.com/ubuntu bionic-security multiverse deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse deb http://gb.archive.ubuntu.com/ubuntu/ bionic-proposed main multiverse universe restricted #Not for humans during development stage of release bionic # ded-src http://archive.ubuntu.com/ubuntu/ trusty-backports main restricted ui=niverse deb http://gb.archive.ubuntu.com/ubuntu/ bionic-backports main restricted multiverse universe
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Hee Jin about 6 yearsFirst do
sudo apt-get update
and then execute this command:dpkg -l | grep ^..r
and add the output to your question -
Joseph-L-S about 6 yearsThe update runs well but still no output for
dpkg -l | grep ^..r
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Hee Jin about 6 yearsTry
sudo apt-get -s -o Debug::pkgProblemResolver=yes install libcurl4
and add the output to your question -
Hee Jin about 6 yearsAlso please edit your question to include the output of
cat /etc/apt/sources.list
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Joseph-L-S about 6 years
sudo apt-get -s -o Debug::pkgProblemResolver=yes install libcurl4
runs with no failures and indicates thatlibcurl4 is already the newest version(7.58.0-2ubuntu3)
. That's because I made some changes to the system. I found out that it is really specific packages that require an earlier version oflibcurl e.g. 3
. Ubuntu 18.04 LTS automatically installsphp7.2
which comes with libcurl4. But with libcurl3 installed, I can't have curl installed. So, I ended up backing-up some data, let go of whatever wasn't really relevant and then reinstalled the packages withlibcurl4 & curl
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Phil almost 6 yearsSlack, amongst others, depends on libcurl3, while curl depends on libcurl4 and libcurl3 and libcurl4 cannot coexist it seems. :-(
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Felipe almost 6 yearsfor the problem with slack, I decided to install that one using snap, otherwise, virtualbox wasn't going to coexist
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JTheDev almost 6 years@Joseph-L-S: Can you make sure the php-curl module is enabled? You can see by echo-ing phpinfo();
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Ken Sharp almost 6 yearsWhere did you get
slack-desktop
from? No such package exists in the archives.
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SatyamChaudhary about 4 yearsThanks, Now working fine