Allocating Cooked File Spaces on UNIX

The following procedure shows an example of allocating a cooked file usr/data/my_chunk for disk space on UNIX.

To allocate cooked file space

Log in as user informix:
```
su informix
```
Change directories to the directory where the cooked space will reside:
```
cd /usr/data
```
Create your chunk by concatenating null to the filename that the database server will use for disk space:
```
cat /dev/null > my_chunk
```
Set the file permissions to 660 (rw-rw----):
```
chmod 660 my_chunk
```

You must set both group and owner of the file to informix:

ls -l my_chunk  -rw-rw----
  1  informix   informix 
  0  Oct 12 13:43 my_chunk