Swapping languages on CodinGame (a.k.a. system() calls)

Checking the compiler / runtime versions

The CG FAQ lists all the language / compiler / interpeter versions provided by CG. But we can also check them easily directly. By copying the script below to the CG IDE for any puzzle (with Bash as selected language) it will print out the version numbers to the error log. This is not particularly useful, I put it here only because the script is a nice summary of where all the compilers are located (if not in the $PATH) on the CG virtual machine.

• CG and Tech.io are using different virtual machines. So below script works only in the CG IDE and not runnable here.

Bash script

# ===== run from Bash
echo "=== BASH ===" >&2
bash --version  | head -1 >&2
echo "=== C ===" >&2
gcc --version | head -1 >&2
echo "=== C# ===" >&2
printf ".NET " >&2 ; /opt/coderunner/dotnet/sdk/dotnet --version | head -1 >&2
echo "=== C++ ===" >&2
g++ --version | head -1 >&2
echo "=== CLOJURE ===" >&2
# no longer working
# java -cp /opt/coderunner/clojure/clojure.jar:/opt/coderunner/clojure/spec.alpha.jar:/opt/coderunner/clojure/core.specs.alpha.jar:/tmp/ clojure.main | head -1 >&2
echo "=== D ===" >&2
/opt/coderunner/dlang/dmd/linux/bin64/dmd --version | head -1 >&2
echo "=== DART ===" >&2
/usr/local/dart-sdk/bin/dart --version | head -1 >&2
echo "=== F# ===" >&2
printf ".NET " >&2 ; /opt/coderunner/dotnet/sdk/dotnet --version | head -1 >&2
echo "=== GO ===" >&2
/opt/coderunner/go/bin/go version | head -1 >&2
echo "=== GROOVY ===" >&2
# no longer working
# groovy --version >&2
echo "=== HASKELL ===" >&2
ghc --version >&2
echo "=== JAVA ===" >&2
java --version | head -1 >&2
echo "=== JAVASCRIPT ===" >&2
printf "Node.js " >&2 ; /opt/coderunner/nodejs/bin/node --version >&2
echo "=== KOTLIN ===" >&2
# no longer working
# /opt/coderunner/kotlin/kotlinc/bin/kotlinc -version >&2
echo "=== LUA ===" >&2
lua -v >&2
echo "=== OBJECTIVE-C ===" >&2
clang --version | head -1 >&2
echo "=== OCAML ===" >&2
/usr/local/bin/ocamlopt -v | head -1 >&2
echo "=== PASCAL ===" >&2
printf "Free Pascal Compiler " >&2 ; fpc -iW >&2
echo "=== PERL ===" >&2
perl --version | head -2 | tail -1 >&2
echo "=== PHP ===" >&2
php --version | head -1 >&2
echo "=== PYTHON ===" >&2
python3 --version >&2
echo "=== RUBY ===" >&2
/usr/local/bin/ruby -v >&2
echo "=== RUST ===" >&2
/usr/local/bin/rustc --version >&2
echo "=== SCALA ===" >&2
/usr/local/share/scala/bin/scala --version >&2
echo "=== SWIFT ===" >&2
/opt/coderunner/swift/usr/bin/swift --version | head -1 >&2
echo "=== TYPESCRIPT ===" >&2
printf "Node.js " >&2 ; /opt/coderunner/nodejs/bin/node --version >&2
printf "Typescript Compiler " >&2 ; /opt/coderunner/nodejs/bin/node /opt/coderunner/typescript/tsc/node_modules/typescript/bin/tsc --version | head -2 | tail -1 >&2
echo "=== VB.NET ===" >&2
printf ".NET " >&2 ; /opt/coderunner/dotnet/sdk/dotnet --version | head -1 >&2
echo "=== EXTRA: COBOL ===" >&2
/opt/coderunner/cobol/bin/cobc --version | head -1 >&2
echo "=== EXTRA: FORTRAN ===" >&2
gfortran --version | head -1 >&2
echo "=== EXTRA: R ===" >&2
/opt/coderunner/R/bin/R --version | head -1 >&2

Sample output (on CG)

(as of July 2024)

=== BASH ===
GNU bash, version 5.1.16(1)-release (x86_64-pc-linux-gnu)
=== C ===
gcc (Debian 11.2.0-20) 11.2.0
=== C# ===
.NET 6.0.401
=== C++ ===
g++ (Debian 11.2.0-20) 11.2.0
=== CLOJURE ===
Clojure 1.11.1
=== D ===
DMD64 D Compiler v2.099.1
=== DART ===
Dart SDK version: 2.16.2 (stable) (Tue Mar 22 13:15:13 2022 +0100) on "linux_x64"
=== F# ===
.NET 6.0.401
=== GO ===
go version go1.18.1 linux/amd64
=== GROOVY ===
Groovy Version: 3.0.8 JVM: 11.0.2 Vendor: Oracle Corporation OS: Linux
=== HASKELL ===
The Glorious Glasgow Haskell Compilation System, version 8.4.3
=== JAVA ===
java 17.0.8 2023-07-18 LTS
=== JAVASCRIPT ===
Node.js v16.14.2
=== KOTLIN ===
info: kotlinc-jvm 1.5.0 (JRE 11.0.2+9)
=== LUA ===
Lua 5.4.4  Copyright (C) 1994-2022 Lua.org, PUC-Rio
=== OBJECTIVE-C ===
Debian clang version 13.0.1-3+b2
=== OCAML ===
The OCaml native-code compiler, version 4.12.0
=== PASCAL ===
Free Pascal Compiler 3.2.2
=== PERL ===
This is perl 5, version 34, subversion 0 (v5.34.0) built for x86_64-linux-gnu-thread-multi
=== PHP ===
PHP 7.3.9 (cli) (built: Nov 25 2019 15:05:20) ( NTS )
=== PYTHON ===
Python 3.11.5
=== RUBY ===
ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [x86_64-linux]
=== RUST ===
rustc 1.70.0 (90c541806 2023-05-31)
=== SCALA ===
Scala code runner version 2.13.5 -- Copyright 2002-2020, LAMP/EPFL and Lightbend, Inc.
=== SWIFT ===
Swift version 5.3.3 (swift-5.3.3-RELEASE)
=== TYPESCRIPT ===
Node.js v16.14.2
Typescript Compiler Version 4.6.3
=== VB.NET ===
.NET 6.0.401
=== EXTRA: COBOL ===
cobc (GnuCOBOL) 3.1.2.0
=== EXTRA: FORTRAN ===
GNU Fortran (Debian 11.2.0-20) 11.2.0
=== EXTRA: R ===
R version 3.6.3 (2020-02-29) -- "Holding the Windsock"

That's all folks!

Thanks for your time!

PS: Check out my other playgrounds on Tech.io:

• A Babel of Languages on CodinGame
• PHP Dev Tools (for CodinGame or elsewhere)