From silico.biotoul.fr
Processes
ps, jobs, Ctrl-C/Z/D, top, kill, killall, nohup, disown, &
I/O & files
permissions, cat, redirection, head, tail, more, less, tac, sed, grep, cut, find, stat, file
shell
variables, test, $?, for, if, function, $(cmd), && ||
archive
tar, bzip, gzip, rsync