June 6, 1993

### NAME

dev_mkdb - create ```/dev` database

### SYNOPSIS

dev_mkdb [-o database] [directory]

### DESCRIPTION

The dev_mkdb command creates a db(3) hash access method database in `````/var/run/dev.db`'' which contains the names of all of the character and block special files in the specified directory, using the file type and the ```st_rdev` field as the key. If no directory is specified, the `````/dev`'' directory is used.

Keys are a structure containing a mode_t followed by a dev_t, with any padding zero'd out. The former is the type of the file (st_mode & S_IFMT), the latter is the st_rdev field.

The options are as follows:

-o database
  Put the output databases in the named file.

### FILES

```/dev`
  Device directory.
```/var/run/dev.db`
  Database file.

### SEE ALSO

ps(1), stat(2), db(3), devname(3), kvm_nlist(3), ttyname(3), kvm_mkdb(8)

### HISTORY

The dev_mkdb command appeared in 4.4BSD.