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HP-UX 11i Version 3: February 2007

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autopush — manage system database of automatically pushed STREAMS modules


autopush -f file

autopush -g -M major -m minor

autopush -r -M major -m minor


autopush manages the system database that is used for automatic configuration of STREAMS devices. The command is used in three different ways as dictated by the -f, -g, and -r command-line options described below.


autopush recognizes the following command-line options and arguments:

-f file

Using the configuration information contained in file, load the system database with the names of the STREAMS devices and a list of modules to use for each device. When a device is subsequently opened, the HP-UX STREAMS subsystem pushes the modules onto the stream for the device.

If - appears as a file argument, autopush uses the standard input.

file must contain one or more lines of at least four fields separated by a space as shown below:

major minor lastminor module1 module2 ... moduleN

The first field major can be either an integer or a device name. The device name is the name for the device used in the master file. The next two fields are integers. If minor is set to -1, then all minor devices for the specified major are configured and lastminor is ignored. If lastminor is 0, then only a single minor device is configured. To configure a range of minor devices for a major device, minor must be less then lastminor. The remaining field(s) list one or more module names. Each module is pushed in the order specified. A maximum of eight modules can be pushed. Any text after a # character in file is treated as a comment for that line only.

This option is also used to restore device configuration information previously removed by autopush -r. However, when used in such a manner, the entire database is restored, not just the information that was previously removed.

-g -M major -m minor

Display current configuration information from the system database for the STREAMS device specified by the major device number (or device name for the device from the master file) and minor number.

If a range of minors has been previously configured then autopush -g returns the configuration information for the first minor in the range, in addition to other information.

-r -M major -m minor

Remove configuration information from the system database for the STREAMS device specified by the major device number (or device name for the device from the master file and minor number. Removal is performed on the database only, not on the original configuration file. Therefore, the original configuration can be restored by using the -f file option. To permanently exclude a STREAMS device from the database, its information must be removed from the configuration file.

If minor matches the first minor of a previously configured range then autopush -r removes the configuration information for the entire configured range.


If the file /tmp/autopush.example contains:

75 -1 0 modA modB test 0 5 modC modA

Then autopush -f /tmp/autopush.example will cause modA and modB to be pushed whenever major device # 75 is opened, and modC and modA to be pushed for the first six opens of device test.

This next example lists information about the stream for major device 75 and its minor device -2:

autopush -g -M 75 -m -2



NLS catalog for autopush.

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