commit items from bin. oopsie

3 files changed, 37 insertions, 2 deletions

diff --git a/.gitignore b/.gitignore
index 10de8b9..74abb03 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,4 @@
 *.pdf
-*.o
 tmp
-bin
 pkg
 node_modules
diff --git a/bin/problem-6.sh b/bin/problem-6.sh
new file mode 100755
index 0000000..e868c90
--- /dev/null
+++ b/bin/problem-6.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+validate_input() {
+  invalid=0
+  regex='^[0-9]+$'
+
+  for i in "$@"; do
+    if ! [[ $i =~ $regex ]]; then
+      echo "error: \"$i\" is not a number" >&2
+      invalid=1
+    fi
+  done
+
+  if [ $invalid -eq 1 ]; then
+    exit 1
+  fi
+}
+
+print_results() {
+  sum=0
+
+  printf "squares:"
+  for i in "$@"; do
+    sum=$((sum + $i))
+    printf " $(($i * $i))"
+  done
+  printf "\n"
+  echo "sum: $sum"
+}
+
+validate_input $@
+print_results $@
+exit 0
diff --git a/bin/test b/bin/test
new file mode 100755
index 0000000..42b2807
--- /dev/null
+++ b/bin/test
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+export PATH="./vendor/bats/bin:./bin:$PATH"
+bats --tap test