diff --git a/docker/apl/run.sh b/docker/apl/run.sh
index 48a9362..581f1e7 100644
--- a/docker/apl/run.sh
+++ b/docker/apl/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.apl
+printf %s "$1" > program.apl
 apl --OFF -s -f program.apl
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/bash/run.sh b/docker/bash/run.sh
index 04d1373..16bffa5 100644
--- a/docker/bash/run.sh
+++ b/docker/bash/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.sh
+printf %s "$1" > program.sh
 bash program.sh
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/brainfuck/run.sh b/docker/brainfuck/run.sh
index ef1d0ee..46b195d 100644
--- a/docker/brainfuck/run.sh
+++ b/docker/brainfuck/run.sh
@@ -1 +1 @@
-bf "$1"
+printf %s "$1" | bf
diff --git a/docker/c/run.sh b/docker/c/run.sh
index c637618..ae6b9d3 100644
--- a/docker/c/run.sh
+++ b/docker/c/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.c
+printf %s "$1" > program.c
 gcc program.c -o program && ./program
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/clojure/run.sh b/docker/clojure/run.sh
index 8b31b02..4b2f897 100644
--- a/docker/clojure/run.sh
+++ b/docker/clojure/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.clj
+printf %s "$1" > program.clj
 clojure program.clj
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/cpp/run.sh b/docker/cpp/run.sh
index d3c8b2a..b9236b9 100644
--- a/docker/cpp/run.sh
+++ b/docker/cpp/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.cpp
+printf %s "$1" > program.cpp
 g++ program.cpp -o program && ./program
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/csharp/run.sh b/docker/csharp/run.sh
index 9028e92..d050032 100644
--- a/docker/csharp/run.sh
+++ b/docker/csharp/run.sh
@@ -1,9 +1,9 @@
 if [ "$EVAL_EXPR" = "true" ]; then
-    csharp -e "$1"
+    printf %s "$1" | csharp -e
 else
     mkdir "$CODEDIR" && cd "$CODEDIR"
 
-    echo "$1" > program.cs
+    printf %s "$1" > program.cs
     csc program.cs >/dev/null && mono program.exe
 
     cd .. && rm -rf "$CODEDIR"
diff --git a/docker/elixir/run.sh b/docker/elixir/run.sh
index d0955a9..71a36e9 100644
--- a/docker/elixir/run.sh
+++ b/docker/elixir/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.exs
+printf %s "$1" > program.exs
 elixir program.exs
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/fsharp/run.sh b/docker/fsharp/run.sh
index 2197e3f..79a7703 100644
--- a/docker/fsharp/run.sh
+++ b/docker/fsharp/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.fs
+printf %s "$1" > program.fs
 fsharpc --optimize- program.fs >/dev/null && mono program.exe
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/go/run.sh b/docker/go/run.sh
index 7226cc5..642b42a 100644
--- a/docker/go/run.sh
+++ b/docker/go/run.sh
@@ -1,7 +1,7 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 export GOCACHE=/tmp/"$CODEDIR"/cache
-echo "$1" > program.go
+printf %s "$1" > program.go
 go run program.go
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/haskell/run.sh b/docker/haskell/run.sh
index ec7767a..62c45b4 100644
--- a/docker/haskell/run.sh
+++ b/docker/haskell/run.sh
@@ -3,7 +3,7 @@ if [ "$EVAL_EXPR" = "true" ]; then
 else
     mkdir "$CODEDIR" && cd "$CODEDIR"
 
-    echo "$1" > program.hs
+    printf %s "$1" > program.hs
     ghc -e main program.hs
 
     cd .. && rm -rf "$CODEDIR"
diff --git a/docker/java/run.sh b/docker/java/run.sh
index aba2315..565e6f4 100644
--- a/docker/java/run.sh
+++ b/docker/java/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > Main.java
+printf %s "$1" > Main.java
 javac Main.java && java Main
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/javascript/run.sh b/docker/javascript/run.sh
index 5a13bec..d6a9e60 100644
--- a/docker/javascript/run.sh
+++ b/docker/javascript/run.sh
@@ -1,5 +1,5 @@
 if [ "$EVAL_HARMONY" = "true" ]; then
-    node --harmony -p "$1"
+    printf %s "$1" | node --harmony -p
 else
-    node -p "$1"
+    printf %s "$1" | node -p
 fi
diff --git a/docker/julia/run.sh b/docker/julia/run.sh
index 5b134b1..c299f35 100644
--- a/docker/julia/run.sh
+++ b/docker/julia/run.sh
@@ -1,5 +1,5 @@
 if [ "$EVAL_EXPR" = "true" ]; then
-    julia -E "$1"
+    printf %s "$1" | julia -E
 else
-    julia -e "$1"
+    printf %s "$1" | julia -e
 fi
diff --git a/docker/lua/run.sh b/docker/lua/run.sh
index 1d0a47b..6ac81b0 100644
--- a/docker/lua/run.sh
+++ b/docker/lua/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.lua
+printf %s "$1" > program.lua
 lua5.3 program.lua
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/ocaml/run.sh b/docker/ocaml/run.sh
index be3a813..caccd04 100644
--- a/docker/ocaml/run.sh
+++ b/docker/ocaml/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.ml
+printf %s "$1" > program.ml
 ocamlopt -cclib --static -o program program.ml && ./program
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/pascal/run.sh b/docker/pascal/run.sh
index 0e5965c..2d23489 100644
--- a/docker/pascal/run.sh
+++ b/docker/pascal/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.pas
+printf %s "$1" > program.pas
 
 # fpc does not use stderr, ld however does, capture both
 res="$(fpc program.pas 2>&1)"
@@ -8,7 +8,7 @@ res="$(fpc program.pas 2>&1)"
 if [ $? -eq 0 ]; then
   ./program
 else
-  echo "$res"
+  printf %s "$res"
   exit 1
 fi
 
diff --git a/docker/perl/run.sh b/docker/perl/run.sh
index a620ee0..7778c41 100644
--- a/docker/perl/run.sh
+++ b/docker/perl/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.pl
+printf %s "$1" > program.pl
 perl program.pl
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/php/run.sh b/docker/php/run.sh
index 0e00fd1..082f83b 100644
--- a/docker/php/run.sh
+++ b/docker/php/run.sh
@@ -1 +1 @@
-php -r "$1"
+printf %s "$1" | php -r
diff --git a/docker/prolog/run.sh b/docker/prolog/run.sh
index 9db671e..5a37620 100644
--- a/docker/prolog/run.sh
+++ b/docker/prolog/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.pl
+printf %s "$1" > program.pl
 swipl --quiet program.pl
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/python2/run.sh b/docker/python2/run.sh
index a45fd07..7496968 100644
--- a/docker/python2/run.sh
+++ b/docker/python2/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.py
+printf %s "$1" > program.py
 python program.py
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/python3/run.sh b/docker/python3/run.sh
index a45fd07..7496968 100644
--- a/docker/python3/run.sh
+++ b/docker/python3/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.py
+printf %s "$1" > program.py
 python program.py
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/racket/run.sh b/docker/racket/run.sh
index 9f394b4..60dd11d 100644
--- a/docker/racket/run.sh
+++ b/docker/racket/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.rkt
+printf %s "$1" > program.rkt
 racket program.rkt
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/ruby/run.sh b/docker/ruby/run.sh
index bf8cbcd..3146029 100644
--- a/docker/ruby/run.sh
+++ b/docker/ruby/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.rb
+printf %s "$1" > program.rb
 ruby program.rb
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/rust/run.sh b/docker/rust/run.sh
index 15bce66..8890f12 100644
--- a/docker/rust/run.sh
+++ b/docker/rust/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
-echo "$1" > program.rs
+printf %s "$1" > program.rs
 rustc -C opt-level=0 --color never program.rs && ./program
 
 cd .. && rm -rf "$CODEDIR"