chmod 0777 /public # OK
chmod 777 /public # WRONG! This is mode 777 decimal = 01411 octal.
-Commands that return numbers currently always print them in decimal.
+Commands that return numbers usually print them in decimal, but
+some commands print numbers in other radices (eg. C<umask> prints
+the mode in octal, preceeded by C<0>).
=head1 WILDCARDS AND GLOBBING
the contents of C</remote> on the mounted filesystem to
C<local/remote-data.tar.gz>. (See C<tgz-out>).
+To change the local directory, use the C<lcd> command. C<!cd> will
+have no effect, due to the way that subprocesses work in Unix.
+
=head1 PIPES
Use C<command E<lt>spaceE<gt> | command> to pipe the output of the
hexdump /bin/ls | head
list-devices | tail -1
+ tgz-out / - | tar ztf -
The space before the pipe symbol is required, any space after the pipe
symbol is optional. Everything after the pipe symbol is just passed