-Currently defined functions include:
-
-ar, basename, busybox, cat, chgrp, chmod, chown, chroot, chvt, clear, cmp, cp,
-cut, date, dc, dd, deallocvt, df, dirname, dmesg, dos2unix, dpkg, dpkg-deb, du,
-dumpkmap, dutmp, echo, expr, false, fbset, fdflush, find, free, freeramdisk,
-fsck.minix, getopt, grep, gunzip, gzip, halt, head, hostid, hostname, id,
-ifconfig, init, insmod, kill, killall, klogd, length, ln, loadacm, loadfont,
-loadkmap, logger, logname, ls, lsmod, makedevs, md5sum, mkdir, mkfifo,
-mkfs.minix, mknod, mkswap, mktemp, more, mount, mt, mv, nc, nslookup, ping,
-pivot_root, poweroff, printf, ps, pwd, rdate, readlink, reboot, renice, reset,
-rm, rmdir, rmmod, route, rpmunpack, sed, setkeycodes, sh, sleep, sort, stty,
-swapoff, swapon, sync, syslogd, tail, tar, tee, telnet, test, tftp, touch, tr,
-true, tty, umount, uname, uniq, unix2dos, update, uptime, usleep, uudecode,
-uuencode, watchdog, wc, wget, which, whoami, xargs, yes, zcat, [
-
-=over 4