User`s guide
DIFFERENCES
/[NO]COMMENTS
/COMMENTS includes in the file comparison all assembly-language comments
found in the two files. (Comments are preceded by a semicolon on the same line.)
This is the default operation.
/NOCOMMENTS excludes comments from the comparison. (Comments are
preceded by a semicolon on the same line.) This is useful if you are comparing
two MACRO source programs with similar contents but different formats.
/DEVICE
Used with the /BINARY option to compare two entire volumes starting with block
0. If one input volume is longer than the other, RT–11 displays the message
?BINCOM-W-Device is longer <device>. RT–11 displays the message ?BINCOM-
W-Devices are different only if differences are found before the point where one
input volume ends and the longer one continues.
/END[:value]
Used with the /BINARY option to specify the ending block number of the file
comparison, where value is an octal number that represents the ending block
number. If you do not supply a value with /END, the ending block number
defaults to the last block of the file or volume.
/FORMFEED
Includes form feeds in the output listing. Normally, RT–11 compares form feeds
but does not include them in the output listing.
/MATCH[:value]
Specifies the number of lines from each file that must agree to constitute a match.
The value argument is an integer in the range 1–200. The default value is 3.
This option is invalid with /BINARY.
/OUTPUT:filespec
Specifies a device and file name for the output listing file. Normally, the listing
appears on the terminal. If you omit the file type for the listing file, RT–11 uses
DIF. Note that RT–11 creates this file only if differences are found. Use the
/ALWAYS option if you want RT–11 to create an output file regardless of whether
any differences are found.
/PRINTER
Prints a listing of differences on the printer. Normally, the listing appears on the
terminal.
/QUIET
Used with the /BINARY option to suppress the display of the differences at the
terminal and displays the message ?BINCOM-W-Files are different or ?BINCOM-
W-Devices are different, if applicable.
RT–11 Command Descriptions 83










