User`s guide

SQUEEZE
(DUP)
• Moves all permanent files into contiguous blocks toward the beginning of the
specified disk.
• Consolidates directory entries.
• Consolidates unused blocks into one or more empty areas at the end of the disk,
depending on the existence and location of file BADs.
Format
SQUEEZE device
Command Options
/OUTPUT:device
/[NO]QUERY
/WAIT
Parameter
device
Specifies the random-access volume to be compressed.
Description
To perform a SQUEEZE operation, RT–11 moves all the files to the beginning of
the device you specify, producing a single unused area after the group of files. The
SQUEEZE operation does not change the bootstrap blocks of a device.
RT–11 requests confirmation before it performs the SQUEEZE operation. You must
type Y
RETURN
to execute the command.
You should not attempt a SQUEEZE operation on a volume that a running
foreground job is using. Data may be written over a file that the foreground job
has open, thereby corrupting the file and possibly causing a system crash.
Use the SQUEEZE command if you get a directory full error and there is still space
remaining on the volume; the SQUEEZE command consolidates both unused blocks
on a volume and directory entries, making more usable space for both storage and
directory entries.
Squeezing a Volume with BAD File Types
The SQUEEZE operation does not move files with BAD file types. This feature
prevents you from reusing bad blocks that occur on a disk. During a SQUEEZE
operation, files with a BAD file type will be renamed FILE.BAD. RT–11 inserts files
RT–11 Command Descriptions 311