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SpartaDOS X Reference Manual |
The Command Processor — Advanced Features |
| The Command Processor — Advanced Features |
| I/O Redirection |
You may redirect the standard input and output of SpartaDOS X commands
on the command line. With SpartaDOS 3.2, redirection was done using batch files (for input redirection) and the PRINT command (for output redirection). SpartaDOS X implements
I/O redirection in a totally different manner. Batch files are no longer considered as "input redirection"
— they are only read by the command processor and are not system wide (i.e. you may not feed input to BASIC through a batch file). The PRINT command has been eliminated.
With SpartaDOS X, you may divert output of a single command by including ">>d:fname" on the command line. Similarly, input redirection is accomplished by including a "<<d:fname" on the command line. For example, the command DIR >>PRN: redirects the output from the DIR command to the printer (the directory listing will not appear on the screen). An alternate way to copy a file would be TYPE fname >>dest This will be slower than the copy command and will not copy the date to the new file. BASIC <<AUTOGO will run the BASIC program "START.BAS" if the text file "AUTOGO" contains the line RUN "D:START.BAS" As an example of output redirection, the following batch file will allow paged viewing of the output of any program by redirecting it to a temporary file, then TYPEing the temporary file with the pause option: %1 %2 %3 %4 %5 %6 %7 %8 %9 >>TEMP For example, if you named the above batch file MORE.BAT and wanted to read the directions printed by the ARC program, use -MORE ARC |
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