Al Woodhull's new manual pages

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.TH FTP 1
.SH NAME
ftp \- a File Transfer Protocol client for Minix
.SH SYNOPSIS
.B ftp
.RI [ server_name ]
.SH DESCRIPTION
.B Ftp
is a File Transfer Protocol client for Minix written by Michael Temari.
.P
There are no command line options for
.B ftp
except for the optional server name, which may be either a numeric IP address
or a domain name resolvable by DNS.
.P
If a server name is specified a connection attempt will be made, and you
will be prompted for a user name and password by the remote system.
Following the login (or immediately, if no server name was specified), the
.br
.B ftp>
.br
prompt is displayed. The following commands are accepted at the prompt:
.P
Command: Description
.br
! Escape to a shell
.br
append Append a file to remote host
.br
ascii Set file transfer type to ascii
.br
binary Set file transfer type to binary
.br
block Set file transfer mode to block
.br
bye Close connection and exit
.br
cd Change directory on remote host
.br
close Close connection
.br
clone Clone a file
.br
del Remove file on remote host
.br
dir Display long form remote host directory listing
.br
exit Close connection and exit
.br
get Retrieve a file from remote host
.br
help Display this text
.br
lcd Change directory on local host
.br
ldir Display long form local host directory listing
.br
lls Display local host directory listing
.br
lmkdir Create directory on local host
.br
lpwd Display current directory on local host
.br
lrmdir Remove directory on local host
.br
ls Display remote host directory listing
.br
mget Retrieve multiple files from remote host
.br
mkdir Create directory on remote host
.br
mod Get file modification time
.br
mput Send multiple files to remote host
.br
noop Send the ftp NOOP command
.br
open Open connection to remote host
.br
pass Enter remote user password
.br
passive Toggle passive mode
.br
put Send a file to remote host
.br
putu Send a file to remote host(unique)
.br
pwd Display current directory on remote host
.br
quit Close connection and exit
.br
quote Send raw ftp command to remote host
.br
reget Restart a partial file retrieve from remote host
.br
remotehelp Display ftp commands implemented on remote host
.br
reput Restart a partial file send to remote host
.br
rm Remove file on remote host
.br
rmdir Remove directory on remote host
.br
site Send a site specific command
.br
size Get file size information
.br
status Get connection/file status information
.br
stream Set file transfer mode to stream
.br
system Get remote system type information
.br
user Enter remote user information
.br
ver Display client version information
.SH "SEE ALSO"
.BR ftpd (8)
.br
.BR ftpget (1)
.br
.SH NOTES
The FTP protocol passes unencrypted usernames and passwords to clients,
so they are potentially exposed to evildoers with network sniffers. So be
wary of using this to exchange files between your own accounts. Obviously
if you have a root account on another system and the remote system will
accept a login as root this is extremely dangerous. (Many ftp servers will
not allow a connection by root).
.P
Text-mode (ASCII) transfers are the default mode, be sure to enter the
"binary" command if you are downloading a program file or a compressed
archive, in fact anything other than a text file from a machine with a
different text-file format than Minix uses.
.P
If you are behind a firewall you probably need to use passive mode to
successfully transfer files.
.SH BUGS
None are known, but there may be some unknown ones. Version 1.00 corrects
a bug in previous versions that would append a \\r (0xd) character to file
names on the destination when an mget transfer was used in binary mode.
.SH AUTHOR
The Minix httpd server was created by and is maintained by Michael Temari
<Michael@TemWare.Com>. The earliest version was released in 1992, for use
with Michael's TNet networking extensions for Minix 1.5.
.P
Man page compiled by Al Woodhull <asw@woodhull.com>
.\" updated 2003-12-13

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.TH MTOOLS 1
.SH NAME
mtools \- tools to access FAT file systems
.SH SYNOPSIS
.B mtools
.RB [ \-V ]
.B msdos_command
.RI [ \-msdos_options ]
.RI arguments " ..."
.SH DESCRIPTION
.de SP
.if t .sp 0.4
.if n .sp
..
.B Mtools
is a collection of utilities to access MS-DOS (FAT) disks from Unix without
mounting them. It supports the long filenames of Windows NT and Windows 95.
It does not support NTFS disks.
.P
Some versions of mtools for other operating systems provide separate
commands, such as mdir, mcopy, etc., to emulate similar MS-DOS and Windows
command line commands. The version ported to Minix takes the MS-DOS
command (dir, copy, etc.) as its first argument. Supported MS-DOS
commands are:
.B attrib,
.B badblocks,
.B cat,
.B cd,
.B copy,
.B del,
.B deltree,
.B dir,
.B doctorfat,
.B du,
.B format,
.B info,
.B label,
.B md,
.B mkdir,
.B partition,
.B rd,
.B rmdir,
.B read,
.B move,
.B ren,
.B showfat,
.B type,
.B write
.P
The MS-DOS options are the same as for DOS commands, except they are prefaced
with "-" instead of "\\".
.P
Use 'mtools msdos_command -?' for help per command. (This tells you "-?"
is an illegal command, but, as with Unix systems, entering an illegal command
often is the easiest way to find out what are the legal commands.)
.P
Note that a disk argument must be terminate by or separated from a path by
a colon (":").
If no disk argument is given mtools assumes you meant "/dev/fd0:", the
first floppy disk drive.
.SH OPTIONS
.TP
.B \-V
Show the mtools version and configuration
.SH EXAMPLES
.de EX
.TP 20
\\fB\\$1\\fR
# \\$2
..
.EX "mtools dir" "show directory of MS-DOS floppy in drive A:."
.EX "mtools copy /dev/c0d0p0:file.txt ." "copy file.txt from MS-DOS root directory to current Minix directory."
.SH "SEE ALSO"
.BR dosdir (1).
.BR dosread (1).
.BR doswrite (1).
.SH NOTES
.P
Mtools requires a lot of memory. The default on a Minix 3 installation
is over 10 MB. A default configured mtools would not run on a system
with only 16 MB RAM. You may be able to make do by using chmem to
reduce the memory allocation of mtools. On the 16 MB system mentioned
mtools still works with a reduction of the memory allocation to half
the original value. The amount of memory you need depends upon the
size of the MS-DOS or Windows file systems you want to access.
Typically systems with big disks also have large amounts of memory. If
mtools won't work for you, you may be able to fall back to the old
dosdir, dosread, and doswrite Minix utilities if the FAT file system
you want to access is small enough (the dos* utilities can access FAT16
partitions up to 256 MB size).
.P
This man page does not attempt to be complete. A lot of information is
available on line. To use mtools well you also need to be familiar with
the options for the corresponding MS-DOS commands.
For more information see the mtools website, http://mtools.linux.lu/.
.P
Mtools-3.9.10 was released on 1 March 2005. The Minix port is of the
earlier Mtools version 3.9.7, dated 1 June 2000.
.P
The Minix port is configured with the following options: disable-xdf
disable-vold disable-new-vold disable-debug disable-raw-term (read the source
to understand what these mean).
.SH BUGS
Yes, bugs may exist, but as this man page is written we don't know of any.
Please report any you find.
.P
As with any program that accesses a foreign file system, reading is probably
safe, but you may want to experiment carefully before using these programs to
write to a Windows system.
.SH AUTHOR
Mtools is maintained by David Niemi and Alain Knaff.
.P
Ported to Minix 2.0.3 by Kees J. Bot <kjb@cs.vu.nl>.
.P
This man page compiled by Al Woodhull <asw@woodhull.com>.
.\" rev 2006-06-17

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.TH URLGET 1
.SH NAME
urlget, ftpget, httpget \- retrieve a file from the internet to stdout
.SH SYNOPSIS
.B urlget
.RB [ \-h ]
.RB [ \-d ]
.RB [ \-p ]
.RI url
.P
.B ftpget
.RI host
.RI path
.RI [user[pass]]
.P
.B httpget
.RB [ \-h ]
.RB [ \-d ]
.RB [ \-p ]
.RI host
.RI path
.SH DESCRIPTION
.de SP
.if t .sp 0.4
.if n .sp
..
.B Urlget
gets a file specified by a URL and copies it to standard output.
.P
.B Ftpget
similarly gets a file from a conventional ftp server, a login name
and password can be specified.
.P
.B Httpget
is similar to
.B urlget,
but the host and path are specified separately without a scheme, as with
ftpget.
.SH OPTIONS
.TP
.B \-h
show the status line and MIME header from the server.
.P
.B \-d
discard the file body.
.P
.B \-p
use POST method, otherwise use GET.
.SH EXAMPLES
.de EX
.TP 20
\\fB\\$1\\fR
# \\$2
..
.TP 15n
.EX "urlget http://minix1.woodhull.com/pub/contrib/file.tar.Z > file.tar.Z" "Download file.tar.Z"
.EX "ftpget minix1.woodhull.com /pub/contrib/README.txt > README.txt" "Get a file from an anonymous ftp server"
.EX "httpget -dh minix1.woodhull.com/index.html" "Inspect the header of a web page"
.SH NOTES
These commands execute the same binary under different names. These commands
provide a lightweight non-interactive command-line method of downloading a
file or inspecting the status of a web page. Data retrieved are written
to standard output.
.SH AUTHOR
Michael Temari <Michael@TemWare.Com>
.P
Man page compiled by Al Woodhull <asw@woodhull.com>
.\" rev 2006-06-16

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.TH HTTP_STATUS 5
.SH NAME
http_status \- HTTP status numbers and their meanings
.SH DESCRIPTION
These are the HTTP status numbers defined in
.BI http.h
in the source directory,
.BI /usr/local/src/httpdxxx.
The message you see on your screen when a page cannot be accessed is
normally generated by your browser.
.P
HTTP_STATUS_OK 200
.br
HTTP_STATUS_CREATED 201
.br
HTTP_STATUS_ACCEPTED 202
.br
HTTP_STATUS_NO_CONTENT 204
.br
HTTP_STATUS_MOVED_PERM 301
.br
HTTP_STATUS_MOVED_TEMP 302
.br
HTTP_STATUS_NOT_MODIFIED 304
.br
HTTP_STATUS_USE_PROXY 305
.br
HTTP_STATUS_BAD_REQUEST 400
.br
HTTP_STATUS_UNAUTHORIZED 401
.br
HTTP_STATUS_FORBIDDEN 403
.br
HTTP_STATUS_NOT_FOUND 404
.br
HTTP_STATUS_METHOD_NOT_ALLOWED 405
.br
HTTP_STATUS_PROXY_AUTH_REQRD 407
.br
HTTP_STATUS_LENGTH_REQUIRED 411
.br
HTTP_STATUS_SERVER_ERROR 500
.br
HTTP_STATUS_NOT_IMPLEMENTED 501
.br
HTTP_STATUS_BAD_GATEWAY 502
.br
HTTP_STATUS_SERVICE_UNAVAILABLE 503
.br
HTTP_STATUS_GATEWAY_TIMEOUT 504
.br
HTTP_STATUS_UNSUPPORTED_VERSION 505
.br
.SH FILES
.TP 25n
.B /usr/local/src/httpdxxx/http.h
.SH "SEE ALSO"
The definitive source of information on the HTTP protocol is the
.B "World Wide Web Consortium"
web page at
.B http://www.w3c.org .
.P
A draft version of the HTTP 1.1 specification is available on the Minix1
websites. For more information on status codes go to this URL:
.B http://minix1.woodhull.com/http11.html#Status-Codes
.SH AUTHOR
The Minix httpd server was created by and is maintained by Michael Temari
<Michael@TemWare.Com>
.P
Man page compiled by Al Woodhull <asw@woodhull.com>
.\"updated 2006-06-01

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.TH HTTPD.CONF 5
.SH NAME
httpd.conf httpd.mtype \- configuration files for the Minix httpd web server
.SH SYNOPSIS
.B /etc/httpd.conf
.B /etc/httpd.mtype
.SH DESCRIPTION
.B /etc/httpd.conf
is the configuration file for the Minix httpd web server written by
Michael Temari. A sample version is included with the distribution
archive and is unpacked in the source directory (normally
.BI /usr/local/src/httpdxxx).
Also provided is an example
.B httpd.mtype
file. This is an extension of the main configuration file which is normally
included when the main file is read.
.P
The makefile does not install
.B httpd.conf
and
.B httpd.mtype
automatically. The sample files included in the distribution are only
examples, you must copy and edit them for the needs of your own
installation.
.SH CONFIGURATION FILE FORMAT
.B httpd.conf
is an ascii file which consists of lines of the following form:
.P
.B directive LWS [parameters separated by LWS]
.br
NOTE: LWS denotes Linear White Space which is spaces and/or tabs
.SH CONFIGURATION FILE DIRECTIVES
The following are valid configuration file directives (listed in the order
they appear in the sample
.B httpd.conf
file provided in the distribution):
.P
.B serverroot redirect user chroot logfile dbgfile dirsend direxec
.B vhost auth proxyauth vpath include mtype
.P
To make the file more readable, for directives which occupy multiple
lines you may eliminate the directive on lines after the first and begin
these lines with LWS.
.SH DESCRIPTIONS OF DIRECTIVES
.P
.B serverroot path
The
.B serverroot
directive sets the translation for
.B //
to the given
.B path.
.B redirect url
The
.B redirect
directive will redirect the entire website via error code
"301 MOVED PERM" to specified url and original path of request.
.B user username
The
.B user
directive causes the server to run as the given
.B username
otherwise the server will run as whoever started it (normally root).
.B chroot directory
The
.B chroot
directive causes the server to chroot to the given directory after
the configuration and log files have been opened. Normally this will be the
home directory of the given username in the user directive.
.br
NOTE:
.B /~user
will be translated to the home directory of
.B user.
.br
NOTE:
.B //
will be translated to the serverroot directory.
.br
NOTE: if this directive is used then beware of the consequences.
.B logfile filename
The
.B logfile
directive tells the server where to log http transactions.
.br
NOTE: the log file must exist to enable logging.
.B dbgfile filename
The
.B dbgfile
directive tells the server where to log debugging of http transactions.
.br
NOTE: the debug log file must exist to enable debug logging.
.B dirsend filelist
The
.B dirsend
directive tells the server that when a directory is requested
that it should send the first file that it finds in the directory from the
.B filelist
for the request.
.B direxec program
The
.B direxec
directive tells the server that when a directory is requested
and no file is found from the
.B dirsend
directive that it should run the given
.B program.
.br
NOTE: the program normally generates a directory listing on the fly using
the
.B dir2html
program.
.br
NOTE: the program access is considered
.B X
with no access restrictions.
.B vhost hostname vhostroot
The
.B vhost
directive is for defining access for virtual hosts. If none are configured
then any host is accepted. If specified then access is only granted for
requests for hosts which are configured here. In the
.B vpath
section below the
.B ///
gets translated to the corresponding
.B vhostroot.
.B auth authname authdescription access [passwdfile [users]]
The
.B auth
directive sets up different authorizations with the server. The
.B authname
is the name given to the authorization and is case insensitive.
The
.B authdescription
is the description of the authorization and is what
the user will see when asked to enter a username and password. The
access is one or more of
.B (RWX).
.B R
tells the server the URL can be read.
.B W
tells the server the URL can be overwritten.
.B X
tells the server
that the URL can and should be executed. Access is in addition to normal
Unix security considerations. For instance a file that can be written to
that does not have the
.B W
access will have an error returned. The
.B passwdfile
is the name of the password file to validate users against. If
.B passwdfile
is given as
.B '.'
then the system password file
.B (/etc/passwd)
will be used. If no
.B passwdfile
is given then no authorization is allowed for anyone. If no
.B users
are given then any validated user is authorized, otherwise only the given
.B users
are allowed.
.B proxyauth authname authdescription access [passwdfile [users]]
The
.B proxyauth
directive defines access authorization to be used for Proxy access.
.br
.B authname
= Same as auth above
.br
.B authdescription
= Same as auth above
.br
.B access
= Must be R to allow proxy
.br
.B passwdfile
= Same as auth above
.br
.B users
= Same as auth above
.B vpath from to [auth [access]]
The
.B vpath
directive sets up URL path translations and authorizations. A
requested URL that matches
.B from
will be translated to
.B to
with the given
.B auth
and
.B access.
If
.B auth
does not exist then the URL will have no
.B access.
If
.B access
is not given then the access is taken from the
.B auth
record (see above). A
.B '.'
in place of the
.B to
means that the server should use a translation from another
.B vpath
record, but associate the given
.B auth
and access with the requested URL. A
.B '*'
may be at the end only of the
.B from
to provide a wildcard match. For example if the
.B from
has
.B /AB*
then any of
.B /ABCDEF
or
.B /AB
or
.B /ABmichael
will match, but
.B /AD or
.B /a
will not. The requested URL is first checked against each
.B vpath
record until an exact match (meaning URL match
.B from
and
.B from
had no
.B '*')
is found or the end of the list. Therefore a wildcard match will match
the last
.B from in the list in which it matched.
.br
NOTE: if at the beginning of the to field
.br
/~user will get translated to the home directory of the given user
.br
// will get translated to the serverroot directory
.B include filename
The
.B include
directive tells the server to read configuration information
from the given filename.
.br
NOTE: normally you get
.B mtype
directives in an included file.
.B mtype mimetype extensions
The
.B mtype
directive tells the server what
.B mimetype
to associate with files which have any of the given
.B extensions.
If no match is found then the file will be treated as
.B application/octet-stream.
.SH FILES
.B /etc/httpd.conf
.B /etc/httpd.mtype
.B /etc/passwd
.SH "SEE ALSO"
.BR httpd (8)
.BR http_status (5)
.SH NOTES
The source directory contains a commented sample
.B httpd.conf
and
.B httpd.mtype
files.
.P
You can run the server as
.B httpd -t /etc/httpd.conf
to see whether the configuration file is being parsed correctly.
.P
Although standard Minix does not have a graphical interface to support
browsers such as Netscape and Microsoft Internet Explorer, the
.B lynx
browser can be used on 32-bit Minix systems with enough memory. You can point
lynx to your own site to browse your own pages.
When debugging a web server there is nothing quite like browsing your own
pages to see whether things are working right. That said, be aware that
different web browsers may vary in how they interpet standard web page
features, and will certainly vary in how they interpret "extensions" to
the HTML standards. So checking a page with several browsers on several
platforms is always a good idea.
.SH BUGS
Not really a bug, but you can get in trouble if a real directory you want
to access shares the first part of its name with a
.B vpath
definition. You just have to pay attention to the directory names you use.
.SH AUTHOR
The Minix httpd server was created by and is maintained by Michael Temari
<Michael@TemWare.Com>
.P
Man page was compiled by Al Woodhull <asw@woodhull.com>
.\" updated 2006-06-01

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.TH HTTPD 8
.SH NAME
httpd, in.httpd, dir2html \- a web server for Minix 2 and Minix 3
.SH SYNOPSIS
.B httpd
.RB [\-t|\-v]
.RI [ config_file ]
.P
.B "tcpd http /usr/local/bin/in.httpd &"
.P
.B dir2html
.RB [directory]
.SH DESCRIPTION
.B Httpd
is a World Wide Web (WWW) server written by Michael Temari. It was
written from scratch so the setup and configuration will not be like
other web servers.
.P
.B In.httpd
is linked to
.B httpd.
This alternate name is used to indicate the program is a server that is
started by
.B tcpd (8),
a program which listens for incoming TCP connections on the passed
port (defined in
.BI /etc/services ).
When a connection comes in
.B tcpd
forks and starts the given daemon program, after possibly checking for access
restrictions and logging the connection. Therefore, to enable
.B in.httpd
to start you use (in a startup script):
.P
.B "tcpd http /usr/local/bin/in.httpd &"
.P
or
.P
.B "daemonize tcpd http /usr/local/bin/in.httpd"
.P
.B (daemonize
is a shell function defined in
.BI/usr/etc/rc
in Minix 2.0.3 and later releases which starts programs as daemons).
To enable or reenable
.B in.httpd
from the command line a user a system administrator should use
.B intr (8),
like this:
.P
.B "intr -d tcpd http /usr/local/bin/in.httpd &"
.P
to start
.B tcpd
as a daemon (getting input from /dev/null, writing output to /dev/log,
and not part of a process group).
.P
.B Dir2html
is an accessory program that produces a directory listing formatted as
web page for the current directory or for a directory specified as an
argument. It is called by
.B httpd
when a web client references a directory that includes no index.html
file (or whatever alternative to index.html that may be defined in
/etc/httpd.conf). Since it writes to standard output it may also be called
as a standalone program.
.P
Options for
.B httpd
are:
.SH OPTIONS
.TP
.B \-t
This tells the server to parse the configuration file so that you can
see if it is the way you want it. You may also pass the name of your
configuration file if it is not the default /etc/httpd.conf.
.TP
.B \-v
Shows the server version, then exits.
.TP
.B config_file
normally /etc/httpd.conf
.SH FILES
.TP 25n
.B /etc/httpd.conf
The configuration file.
.P
.B /etc/httpd.mtype
Extension to configuration file defining MIME types.
.P
.B /usr/adm/httpd.log
Log file. The file must exist for logging to begin.
.SH "SEE ALSO"
.BR httpd.conf (5),
.BR http_status (5),
.BR serv.access (5),
.BR intr (8),
.BR tcpd (8).
.SH NOTES
This server has been tested on both Minix 2 and Minix 3.
.P
Running a server exposed to the Internet is risky to the host system and
to the local network. Consult with the owner of your net before you go
public. Read the
.B SECURITY
document in the source directory.
.P
The
.B tcpd (8)
man page needs to be written. The important thing to know is that if
the access control file
.B /etc/serv.access
exists tcpd will exec its paranoid twin, tcpdp, which will deny access from
any IP for which a name cannot be found.
.SH BUGS
None are known, but there are surely some unknown ones. Be careful!
.SH AUTHOR
The Minix httpd server was created by and is maintained by Michael Temari
<Michael@TemWare.Com>
.P
This man page was compiled by Al Woodhull <asw@woodhull.com>
.P
.\" updated 2006-06-17

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.TH TCPD 8
.SH NAME
tcpd, tcpdp \- waits for a TCP connection request and starts a server
.SH SYNOPSIS
.B tcpd
.RB [ \-d ]
.RB [ \-m
.RI maxclients ]
.RI service
.RI program
.RB [ arg ... ]
.SH DESCRIPTION
.de SP
.if t .sp 0.4
.if n .sp
..
.B Tcpd
is a daemon, that is, a user-space program that is normally started when the
operating system is started and that normally does not terminate until the
system is shut down.
Conceptually, you can think of
.B tcpd
as doing nothing but listening to a port for a connection attempt. Several
copies of
.B tcpd
will typically be started, one for each service that is to be provided.
When a connection is detected the tcpd for that port
.IR fork s
and then the child process
.IR exec s
an instance of the server for that port.
.P
The above description is simplified.
Normally two versions of the tcpd.c source code are compiled.
.B Tcpd
is the one that waits for a connection. When a connection occurs
.B tcpd
.IR fork s.
If
.B tcpd
was started with options or if the child detects that the access
control file
.IR /etc/serv.access
exists, the child will
.IR exec
its paranoid twin,
.B tcpdp,
which checks that the connection attempt is from an allowed node or network,
or that it is not from a disallowed node or network.
.B Tcpdp
also tries to look up the name corresponding to an IP address, and denies
the connection if a name cannot be found. Finally,
.B tcpdp
determines whether the connection is supposed to be logged.
If all is well, the child
.B tcpd
or
.B tcpdp
then
.IR exec s
the server for the service with any arguments specified on the command line
for that server.
.SH OPTIONS
.TP
.B \-d
turn on debugging.
.TP
.B \-m
allow no more than the specified
.IR maxclients
to start.
.SH EXAMPLES
.de EX
.TP 20
\\fB\\$1\\fR
# \\$2
..
.TP 15n
.EX "tcpd telnet in.telnetd &" "wait for a telnet connection on the normal port"
.EX "tcpd 8000 in.httpd /etc/httpd8000.conf &" "wait for web page request on port 8000 and use a custom config file for the in.httpd program."
.P
Note that command lines must be terminated with "&" to return control to the
calling process, leaving the daemon executing as a background process.
.P
The above examples show how tcpd might be invoked from /etc/rc or
another script that runs during system initialization. You will also
see this in the supplied startup scripts:
.EX "daemonize tcpd shell in.rshd" "daemonize is a shell function that tests whether a daemon is present and starts it if so, using the & to start it in the background."
.P
Another case that should be mentioned is that when a system administrator
wants to start (or restart) a daemon from a command line,
.BR intr (8)
should be used, like this:
.EX "intr -d tcpd telnet in.telnetd &" "remove the daemon from a process group and connect its input to /dev/null and its output to /dev/log."
.SH FILES
.TP 25n
.B /etc/serv.access
The access control file.
.SH "SEE ALSO"
.BR execve (2),
.BR fork (2),
.BR intr (8),
.BR serv.access (5).
.SH NOTES
That daemons cannot daemonize themselves is a way in which Minix differs from
most other Unix-like systems.
.P
Allowing access to your system from the net is dangerous. Be sure you
know what you are doing. Be sure the owner of your net knows what you are
doing. Don't enable services you don't need. Enable logging and look at your
logs.
.SH BUGS
None known, let us know...
.SH AUTHOR
Kees J. Bot <kjb@cs.vu.nl>
.P
Man page by Al Woodhull <asw@woodhull.com>
.\" rev 2006-06-02