Tag Archives: DISKSPEED

CT_DISKSPEED

Posted on by vivaclipper 
 DISKSPEED()
 Determines a comparison value for the drive speed

 Syntax

     DISKSPEED(<cDrive>) --> nDriveSpeed

 Argument

     <cDrive>  Designates for which physical drive identifier (A, B, C,
     etc.) to determine the speed.  You do not need to use the colon (:).

 Returns

     DISKSPEED() returns a percentage comparison value to a floppy drive of a
     4.77 MHz PC, which corresponds to 100%.

 Description

     Use this function when you want to calculate the approximate duration of
     such complex file operations as INDEX or SORT.  Since the total duration
     always depends upon the remaining computer speed, you should also use
     the SPEED() function..

     If the designated drive is unavailable or cannot be checked (network
     drive), the function returns a 0 value.

 Note

     .  You can only implement DISKSPEED() for physical drives, not
        network drives.

 Examples

     .  Show the speed of drive A:

        ? DISKSPEED("A")            // depends on drive

     .  Show the factor for your hard disk:

        ? DISKSPEED("C")            // e.g. 720  Factor 7.2

See Also: SPEED()

Tools — Disk Utilities

Posted on by vivaclipper 
Introduction Disk Utilities
DELETEFILE() Deletes an error-tolerant file
DIRCHANGE()  Changes the current directory
DIRMAKE()    Creates a directory
DIRNAME()    Determines the name of the current directory
DIRREMOVE()  Removes a directory
DISKCHANGE() Changes the current disk drive
DISKCHECK()  Creates a checksum for a disk
DISKFORMAT() Formats disks, controlled through a UDF
DISKFREE()   Determines the space available on a floppy or hard disk
DISKNAME()   Determines the drive designator for the current drive
DISKREADY()  Tests to see if a disk drive is ready
DISKREADYW() Queries whether you can write to a drive
DISKSPEED()  Determines a comparison value for the drive speed
DISKSTAT()   Determines the status of a drive.
DISKTOTAL()  Determines the total capacity of a floppy or hard disk
DISKTYPE()   Determines the type of data carrier
DRIVETYPE()  Determines the drive type
FILEAPPEND() Appends data to a file
FILEATTR()   Determines a file's attributes
FILECCLOSE() Closes a file after backup mode
FILECCONT()  Copies sections of a file in backup mode
FILECDATI()  Determines which date the target file contains with FILECOPY()
FILECHECK()  Calculates/computes/determines a checksum for a file
FILECOPEN()  Tests to see if the file is still open in the backup mode
FILECOPY()   Copies files normally or in backup mode
FILEDATE()   Determines the file date
FILEDELETE() Deletes file(s) by name and attribute
FILEMOVE()   Moves files to another directory
FILESEEK()   Searches for files by name and attribute
FILESIZE()   Determines the size of a file
FILESTR()    Reads a portion of a file into a string
FILETIME()   Determines a file's time
FILEVALID()  Tests whether a string has a valid file name
FLOPPYTYPE() Determines the exact type of floppy drive
GETSHARE()   Determines the file open (share) mode
NUMDISKF()   Determines the number of installed disk drives
NUMDISKH()   Determines the number of hard disks
NUMDISKL()   Determines the number of available logical drives
RENAMEFILE() Fault tolerant renaming of a file.
RESTFSEEK()  Restores the FILESEEK environment
SAVEFSEEK()  Saves the current FILESEEK environment
SETFATTR()   Sets a file's attributes
SETFCREATE() Default attribute for creating with CA-Clipper Tools functions
SETFDATI()   Sets the date and time of a file
SETSHARE()   Sets default opening mode for CA-Clipper Tools file functions
STRFILE()    Writes a string to a file
TEMPFILE()   Creates a file for temporary use
TRUENAME()   Standardizes the path designation
VOLSERIAL()  Determines the DOS disk serial number
VOLUME()     Establishes a volume label for a floppy or hard disk