diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7832b59
--- /dev/null
+++ b/README.md
@@ -0,0 +1,7 @@
+# sys_prog
+
+System Programming exercises / homeworks.
+
+## Description
+
+[Rickroll](https://www.youtube.com/watch?v=9KxTcDsy9Gs)
diff --git a/sortlines/README.md b/sortlines/README.md
new file mode 100644
index 0000000..7d95690
--- /dev/null
+++ b/sortlines/README.md
@@ -0,0 +1,8 @@
+# sortlines
+
+Write a program called sortlines that reads one line at a time from the
+standard input, and outputs the sequence of words in each line sorted in
+lexicographical order. A word is a (maximal) contiguous sequence of alphabetic
+characters as defined by the isalpha library function. The output sequence for
+each line should be printed on a single line with each word separated by one
+space. An input line is guaranteed to be at most 1000 characters.