CHKBLKS: check files for blocks used

Description

Produces a listing of files on a volume whose disk space allocation exceeds a selected number of blocks.

Categories

Disk Management
System Operation

Related files

CHKBLKS: Object file and BASIC source.

User Instructions

From the OPTIONS screen, enter the number of blocks that will be used as a threshold, the volume name, and whether errors are to be displayed (select NO if run from a background procedure). Press (RETURN) to continue or PF(16) to exit without processing.

CHKBLKS will produce a short listing with the file, library, and volume, blocks allocated and owner ID.

Programmer Instructions

CHKBLKS may be run under program control if the ERRDISP option is set to NO. The listing produced is crude, without page headers or breaks, and may be easily converted to a data file with the CREATE utility or other means.

The program consists of only one screen (a GETPARM):

OPTIONS     Press (RETURN) to continue, PF(16) to exit
            without processing.

  BLOCKS    (blank)     The number of blocks to be searched
                        for.

  VOLUME    (blank)     The volume to be searched.

  ERRDISP   YES         Whether errors are displayed on the
                        workstation.  Change to NO if run
                        from a procedure in background.

The listing consists of the file name and location, blocks allocated, and owner ID.

BASIC source is available.

Example of use

Use to quickly determine what are the large files on a volume. Enter the volume name and the lower limit of blocks allocated and press return to analyze the volume.

Note that the all users of the disk under examination will "freeze" while the disk catalog (VTOC) is being examined. This is because the entire VTOC is extracted during analysis. For this reason, non-emergency use of CHKBLKS should be limited to times when there are no users on the system.

Comments

Crude but effective. A good fast way to check for the disk "hogs" on your system. Might also be used to produce and maintain a data base of large files on the system.