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+################
+CS:APP Shell Lab
+################
+
+Files:
+
+Makefile	# Compiles your shell program and runs the tests
+README		# This file
+tsh.c		# The shell program that you will write and hand in
+tshref		# The reference shell binary.
+
+# The remaining files are used to test your shell
+sdriver.pl	# The trace-driven shell driver
+trace*.txt	# The 15 trace files that control the shell driver
+tshref.out 	# Example output of the reference shell on all 15 traces
+
+# Little C programs that are called by the trace files
+myspin.c	# Takes argument <n> and spins for <n> seconds
+mysplit.c	# Forks a child that spins for <n> seconds
+mystop.c        # Spins for <n> seconds and sends SIGTSTP to itself
+myint.c         # Spins for <n> seconds and sends SIGINT to itself
+