/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 kill %jobNumber history jobs exit /usr/foo% /usr/foo/doIt < infile.txt > outfile.txt /usr/foo% exit