How do I know what programming languages (I mean their compilers and interpreters) are already pre-installed in Ubuntu? For example, I see that Python is here. If I type python
command in the terminal, it turns out that I have python version 2.7.12. But what about other popular programming and scripting languages like Ruby, Perl, C, Lua, awk, Java, PHP, etc. etc. Should I try to launch them in the terminal or try something like language --version
one by one, or is there a better way to know this?
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You cannot "install" a language on any system .. there are interpreters and compilers you install and since they are sometimes similar sometimes really different I don't think there is a simple way to check for all of them rather than checking one by one– derHugoJul 3, 2017 at 13:46
4 Answers
As of latest LTS release , 16.04, Ubuntu comes with Perl 5, GNU awk (used to be mawk), Python 2 and 3 by default. Not entirely sure about C compiler. You may need build-essential
package installed
For everything else, use apt-cache policy **package-name**
to see if it is installed. You can also view the release manifest files as described in this answer:https://askubuntu.com/a/48894/295286
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1
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@ChaiT.Rex Well, they're shells technically, both conforming to standard Shell Command Language specifications, but
bash
having more advanced syntax. So technically they're not "programming languages" as in C or Python sense, but yes good mention of the two. May 22, 2018 at 7:40
I wrote a small bash script. Its very basic but its something
#!/usr/bin/env bash
languages="php python go perl mysql c c++ java"
binaries="ls /usr/bin"
for i in $languages ; do
for j in $($binaries); do
if [[ $i == $j ]]; then
echo $i
fi
done
done
type whereis [program]
. if nothing shows up then it is not installed. A rather silly way,but still usable.