testing file permissions..... Post: 302388979

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LEARN ABOUT FREEBSD

devfs.conf

DEVFS.CONF(5)						      BSD File Formats Manual						     DEVFS.CONF(5)

NAME

     devfs.conf -- boot-time devfs configuration information

DESCRIPTION

     The devfs.conf file provides an easy way to set ownership and permissions, or create links for devices available at boot.

     It does not work for devices plugged in and out after the system is up and running, e.g. USB devices.  See devfs.rules(5) for setting owner-
     ship and permissions for all device nodes, and devd.conf(5) for actions to be taken when devices are attached or detached.

     Lines starting with a hash sign ('#') and empty lines are ignored.  The lines that specify devfs.conf rules consist of three parameters sepa-
     rated by whitespace:

     action  The action to take for the device.  The action names are only significant to the first unique character.

     devname
	     The name of the device created by devfs(5).

     arg     The argument of the action.

     The actions currently supported are:

     link    This action creates a symbolic link named arg that points to devname, the name of the device created by devfs(5).

     own     This action changes the ownership of devname.  The arg parameter must be in the form of an owner:group pair, in the same format used
	     by chown(8).

     perm    This action changes the permissions of devname.  The arg parameter must be a mode as explained in chmod(1).

FILES

     /etc/devfs.conf
     /usr/share/examples/etc/devfs.conf

EXAMPLES

     To create a /dev/cdrom link that points to the first SCSI(4) CD-ROM, the following may be added to devfs.conf:

	   link    cd0	   cdrom

     Similarly, to link /dev/cdrom to the first ATAPI CD-ROM device, the following action may be used:

	   link    acd0    cdrom

     To set the owner of a device, the own action may be specified:

	   own	   cd0	   root:cdrom

     To set the permissions of a device, a perm action should be used:

	   perm    cd0	   0660

SEE ALSO

     chmod(1), devd.conf(5), devfs(5), devfs.rules(5), chown(8)

AUTHORS

     This manual page was written by Roland Smith <rsmith@xs4all.nl>.

BSD
								   May 17, 2005 							       BSD

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

testing for file size in script

Discussion started by: Ivo

2. UNIX for Dummies Questions & Answers

Testing existence of a file /directory

Discussion started by: ajaya

3. HP-UX

To give the "unzip" permissions & "create" file permissions

Discussion started by: Mike1234

4. Shell Programming and Scripting

Testing for empty file

Discussion started by: mojoman