/usr/foo% jobs
	No background jobs.
/usr/foo% ./a.out
	Hello World
/usr/foo% ./a.out > hello.txt
/usr/foo% more hello.txt
	Hello World
/usr/foo% cd bar
/usr/foo/bar% history
	[1] jobs
	[2] ./a.out
	[3] ./a.out > hello.txt
	[4] more hello.txt
	[5] cd bar
	[6] history
/usr/foo/bar% !-2
	bar: No such file or directory
/usr/foo/bar% !2
	./a.out: Command not found
/usr/foo/bar% !0
	Event not found
/usr/foo/bar% !-50
	Event not found
/usr/foo/bar% cd ..
/usr/foo% jobs
	No jobs
/usr/foo% ./infiniteLoop &
/usr/foo% jobs
	[1] ./infiniteLoop 
/usr/foo% kill 1
	[1] ./infiniteLoop terminated
/usr/foo% jobs
/usr/foo% help
	cd <relative or absolute directory>
	kill jobNumber
	history
	jobs
	exit
/usr/foo% /usr/foo/doIt < infile.txt > outfile.txt
/usr/foo% exit