Create a file on magnetic tape
You are encouraged to solve this task according to the task description, using any language you may know.
The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape
JCL
<lang JCL>// EXEC PGM=IEBGENER //* Create a file named "TAPE.FILE" on magnetic tape; "UNIT=TAPE" //* may vary depending on site-specific esoteric name assignment //SYSPRINT DD SYSOUT=* //SYSIN DD DUMMY //SYSUT2 DD UNIT=TAPE,DSN=TAPE.FILE,DISP=(,CATLG) //SYSUT1 DD * DATA TO BE WRITTEN TO TAPE /* </lang>
Tcl
Tcl does not have built-in special support for tape devices, so it relies on the OS to handle most of the details for it. Assuming a relatively modern Unix:
<lang tcl>cd /tmp
- Create the file
set f [open hello.jnk w] puts $f "Hello World!" close $f
- Archive to tape
set fin [open "|tar cf - hello.jnk" rb] set fout [open /dev/tape wb] fcopy $fin $fout close $fin close $fout</lang>
TUSCRIPT
<lang tuscript>$$ MODE TUSCRIPT STATUS = CREATE ("tape.file",tape-o,-std-) PRINT STATUS</lang> Output:
OK
UNIX Shell
<lang bash>#!/bin/sh cd # Make our home directory current echo "Hello World!" > hello.jnk # Create a junk file
- tape rewind # Uncomment this to rewind the tape
tar c hello.jnk # Traditonal archivers use magnetic tape by default
- tar c hello.jnk > /dev/tape # With newer archivers redirection is needed</lang>
ZX Spectrum Basic
The ZX Spectrum does not have file type extensions, so we save as TAPEFILE, rather than TAPE.FILE. We can use any start address, depending on where we want the data to come from. Here we dump the contents of the screen: <lang zxbasic>SAVE "TAPEFILE" CODE 16384,6912</lang>