Erlang不会从Ubuntu 18.04中卸载

Question

我有一个 Ubuntu-18.04 aws 实例。我已经安装了Erlang / OTP 21 [erts-10.1]，按照这个链接 https://hostpresto.com/community/tutorials/how-to-install-erlang-on-ubuntu-16-04/ 但我是每当我尝试在同一实例上安装ejabberd时，我都会收到这样的错误

ubuntu@ip-172-11-11-11:~$ sudo apt-get install make gcc libexpat1-dev libyaml-dev  automake libssl-dev erlang  build-essential libncurses5-dev openssl zlib1g-dev libgd-dev libwebp-dev fop xsltproc unixodbc-dev -y
Reading package lists... Done
Building dependency tree       
Reading state information... Done
automake is already the newest version (1:1.15.1-3ubuntu2).
build-essential is already the newest version (12.4ubuntu1).
make is already the newest version (4.1-9.1ubuntu1).
make set to manually installed.
gcc is already the newest version (4:7.3.0-3ubuntu2.1).
gcc set to manually installed.
libncurses5-dev is already the newest version (6.1-1ubuntu1.18.04).
libssl-dev is already the newest version (1.1.0g-2ubuntu4.1).
openssl is already the newest version (1.1.0g-2ubuntu4.1).
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:
 erlang : Depends: erlang-diameter but it is not going to be installed
          Depends: erlang-eldap but it is not going to be installed
          Depends: erlang-ftp but it is not going to be installed
          Depends: erlang-tftp but it is not going to be installed
          Recommends: erlang-ic-java but it is not going to be installed
          Recommends: erlang-src but it is not going to be installed
          Recommends: erlang-examples but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

所以我决定使用以下命令卸载erlang：

sudo apt-get purge erlang*

sudo apt-get remove erlang

sudo apt-get remove --auto-remove erlang

sudo apt-get purge erlang

但是，即使在运行了它们之后，当我在cmd提示符下编写＜code＞erl＜/code＞时，我也会得到

Erlang/OTP 21 [erts-10.1] [source] [64-bit] [smp:1:1] [ds:1:1:10] [async-threads:1] [hipe]

Eshell V10.1  (abort with ^G)
1> 
BREAK: (a)bort (c)ontinue (p)roc info (i)nfo (l)oaded
       (v)ersion (k)ill (D)b-tables (d)istribution

我哪里出错了？现在如何完全卸载erlang？

编辑

~$ dpkg -l 'erlang*'
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version      Architecture Description
+++-==============-============-============-=================================
un  erlang         <none>       <none>       (no description available)
un  erlang-abi-17. <none>       <none>       (no description available)
un  erlang-appmon  <none>       <none>       (no description available)
un  erlang-asn1    <none>       <none>       (no description available)
un  erlang-base    <none>       <none>       (no description available)
un  erlang-base-hi <none>       <none>       (no description available)
un  erlang-common- <none>       <none>       (no description available)
un  erlang-corba   <none>       <none>       (no description available)
un  erlang-crypto  <none>       <none>       (no description available)
un  erlang-debugge <none>       <none>       (no description available)
un  erlang-dev     <none>       <none>       (no description available)
un  erlang-dialyze <none>       <none>       (no description available)
un  erlang-doc     <none>       <none>       (no description available)
un  erlang-docbuil <none>       <none>       (no description available)
un  erlang-edoc    <none>       <none>       (no description available)
un  erlang-erl-doc <none>       <none>       (no description available)
un  erlang-et      <none>       <none>       (no description available)
un  erlang-eunit   <none>       <none>       (no description available)
un  erlang-gs      <none>       <none>       (no description available)
un  erlang-ic      <none>       <none>       (no description available)
un  erlang-inets   <none>       <none>       (no description available)
un  erlang-inviso  <none>       <none>       (no description available)
un  erlang-manpage <none>       <none>       (no description available)
un  erlang-megaco  <none>       <none>       (no description available)
un  erlang-mnesia  <none>       <none>       (no description available)
ii  erlang-mode    1:21.1-1     all          Erlang major editing mode for Ema
un  erlang-observe <none>       <none>       (no description available)
un  erlang-odbc    <none>       <none>       (no description available)
un  erlang-os-mon  <none>       <none>       (no description available)
un  erlang-parseto <none>       <none>       (no description available)
un  erlang-percept <none>       <none>       (no description available)
un  erlang-pman    <none>       <none>       (no description available)
un  erlang-public- <none>       <none>       (no description available)
un  erlang-reltool <none>       <none>       (no description available)
un  erlang-runtime <none>       <none>       (no description available)
un  erlang-snmp    <none>       <none>       (no description available)
ii  erlang-solutio 1.0          all          A package to add repository.
un  erlang-ssh     <none>       <none>       (no description available)
un  erlang-ssl     <none>       <none>       (no description available)
un  erlang-syntax- <none>       <none>       (no description available)
un  erlang-test-se <none>       <none>       (no description available)
un  erlang-toolbar <none>       <none>       (no description available)
un  erlang-tools   <none>       <none>       (no description available)
un  erlang-tv      <none>       <none>       (no description available)
un  erlang-typer   <none>       <none>       (no description available)
un  erlang-webtool <none>       <none>       (no description available)
un  erlang-wx      <none>       <none>       (no description available)
un  erlang-xmerl   <none>       <none>       (no description available)

'type erl'给出此输出

erl is /usr/bin/erl

Answer 1

尝试将-y添加到您的命令中，如sudo apt get purge erlang*-y

Answer 2

我怀疑当前安装的软件包是< code>esl-erlang。正如您链接到的指南中提到的，您可以在< code>erlang和< code>esl-erlang之间进行选择，我猜打包的ejabberd更喜欢< code>erlang。尝试卸载< code>esl-erlang，您应该能够安装< code>erlang。