chore: updated sample permissions checker to have better error output

Signed-off-by: Carl Flottmann <[email protected]>

Author: art1f1c3R

scripts/dev_scripts/samples_permissions_checker.sh

@@ -8,6 +8,23 @@
 # failing if any do.
 #
 
+# Strict bash options.
+#
+# -e:          exit immediately if a command fails (with non-zero return code),
+#              or if a function returns non-zero.
+#
+# -u:          treat unset variables and parameters as error when performing
+#              parameter expansion.
+#              In case a variable ${VAR} is unset but we still need to expand,
+#              use the syntax ${VAR:-} to expand it to an empty string.
+#
+# -o pipefail: set the return value of a pipeline to the value of the last
+#              (rightmost) command to exit with a non-zero status, or zero
+#              if all commands in the pipeline exit successfully.
+#
+# Reference: https://www.gnu.org/software/bash/manual/html_node/The-Set-Builtin.html.
+set -euo pipefail
+
 MACARON_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && cd ../.. && pwd)"
 SAMPLES_PATH="${MACARON_DIR}/tests/malware_analyzer/pypi/resources/sourcecode_samples"