Tandy 1000 MS-DOS Reference Manual page 128

Chapter 6 / Command Reference
IF
IF
[NOT] condition command
Internal
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Allows conditional execution of commands in batch file process-
ing. When the condition is true, the command is executed. When
it is false, the command is ignored.
Parameters
NOT changes the IF command so that the command executes
only when the condition is false.
condition is one of the following:
ERRORLEVEL number indicates that the command is to
execute only if the program previously executed by COM-
MAND has an exit code of number or higher.
stringl
= =
string2 indicates that the command is to exe-
cute only if stringl and string2 are identical after parame-
ter substitution. Strings may not have embedded
separators.
EXIST pathname indicates that the command is to execute
only if the file specified by pathname exists.
Notes and Suggestions
• Use IF with the GOTO command to direct execution to partic-
ular subroutines when particular conditions exist. (See the
GOTO command.)
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