diff --git a/cours/pipe.pdf b/cours/pipe.pdf
new file mode 100644
index 0000000..c57eb06
Binary files /dev/null and b/cours/pipe.pdf differ
diff --git a/td/td6/td6.pdf b/td/td6/td6.pdf
new file mode 100644
index 0000000..0e7879e
Binary files /dev/null and b/td/td6/td6.pdf differ