Axis 2401 - PHP3 GUIDE Technické informace stáhnout pdf (Strana 50)

An Introduction to Shells in General

Axis Communications AB provides NO support for application development of any kind. The information

here is provided "as is", and there is no guarantee that any of the examples shown will work in your

particular application.

Revision 1.02 October 2002 50

daemon:x:1:1:daemon:/usr/sbin:/bin/sh

5.3.20 hostname

Syntax: hostname [OPTION] {hostname | -F file}

Get or set the hostname or DNS domain name. If a hostname is given (or a file with the -F

parameter), the host name will be set.

Options:

-s Short

-i Addresses for the hostname

-d DNS domain name

-F, --file FILE Use the contents of FILE to specify the hostname

Example:

$ hostname

slag

5.3.21 id

Syntax: id [OPTIONS]... [USERNAME]

Print information for USERNAME or the current user

Options:

-g prints only the group ID

-u prints only the user ID

-n print a name instead of a number (with for -ug)

-r prints the real user ID instead of the effective ID (with -ug)

Example:

$id

uid=1000(andersen) gid=1000(andersen)

5.3.22 init

Syntax: init

init is the parent of all processes. This version of init is designed to be run only by the

kernel.

BusyBox init doesn't support multiple runlevels. The runlevels field of the /etc/inittab

file is completely ignored by BusyBox init. If you want runlevels, use sysvinit.

BusyBox init works just fine without an inittab. If no inittab is found, it has the following default

behavior:

::sysinit:/etc/init.d/rcS

::askfirst:/bin/sh

::ctrlaltdel:/sbin/reboot

::shutdown:/sbin/swapoff -a

::shutdown:/bin/umount -a -r

If it detects that /dev/console is _not_ a serial console, it will also run:

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Axis 2401 - PHP3 GUIDE Technické informace Strana 50