then only the record 00002500 is deleted. If the file contains
./ D2500 2800 then all the statements from 2500 through 2800 are deleted from the
source file.
REPLACEStatement: The REPLACE statement allows you to replace one or iore-records-In-the source file. It precedes the new records you want
to add. It is a combination of the DELETE andINSERT statements. For
example, the lines
./ R38000 38500 PLIST DS OD DC CL8'TYPE' DC CL8" DC CL8'FILE'
DC CL8'Al'
DC8X'FF' replace existing statements numbered 38000 through 38500 with
lines of code. As with theINSERT statement, new lines
automatically resequenced.
the new
are notUse this statement when you want to place comments in
the update log file. Forexample, the line:
./ * Changes by JohnJ. programmer
is not processedby the UPDATE command when it creates the new source
file, but it is written into the update log file.SEQUENCING OUTPUT RECORDS The UPDATE command expects source files to have sequence numbers in
columns 73 through80. If you use the SERIAL subcommand of the your files, the sequence numbers are usually written
in columns 76 through80; columns 73 through 75 contain a
three-character identifier which is usually the first three characters
of the filename. If you want an eight-character sequence nuaber, youmust use the subcommand: serial all
prior to issuing a FILE orSAVE subcommand when you are editing the
file.Or, you can create an UPDATE file with the single record:
./S and issue the UPDATE command to sequence the file.
If you use theUPDATE command with a file that has been sequenced
using themust use the NOSEQ8 option.
Otherwise, theUPDATE command cannot process your input file. The
command:
updatesample (noseq8
tellsUPDATE to use only columns 76 through 80 when it looks for
sequence numbers.
Figure 22 shows the four files involved in
contents.
254IBM VM/370 CMS User's Guide
./ D
source file.
REPLACE
to add. It is a combination of the DELETE and
example, the lines
./ R
DC CL8'Al'
DC
lines of code. As with the
automatically resequenced.
the new
are not
the update log file. For
./ * Changes by John
is not processed
file, but it is written into the update log file.
columns 73 through
in columns 76 through
three-character identifier which is usually the first three characters
of the filename. If you want an eight-character sequence nuaber, you
prior to issuing a FILE or
file.
./
If you use the
using the
Otherwise, the
command:
update
tells
sequence numbers.
Figure 22 shows the four files involved in
contents.
254
