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- extproc C:\binp\misc\perl.exe -S
- #!perl
-
- # os2.pl: Demonstrates the OS/2 system calls and shows off some of the
- # features in common with the UNIX version.
-
- do "syscalls.pl" || die "Cannot load syscalls.pl ($!)";
-
- # OS/2 version number.
-
- $version = " "; syscall($OS2_GetVersion,$version);
- ($minor, $major) = unpack("CC", $version);
- print "You are using OS/2 version ", int($major/10),
- ".", int($minor/10), "\n\n";
-
- # Process ID.
- print "This process ID is $$ and its parent's ID is ",
- getppid(), "\n\n";
-
- # Priority.
-
- printf "Current priority is %x\n", getpriority(0,0);
- print "Changing priority by +5\n";
- print "Failed!\n" unless setpriority(0,0,+5);
- printf "Priority is now %x\n\n", getpriority(0,0);
-
- # Beep.
- print "Here is an A440.\n\n";
- syscall($OS2_Beep,440,50);
-
- # Pipes. Unlike MS-DOS, OS/2 supports true asynchronous pipes.
- open(ROT13, '|perl -pe y/a-zA-Z/n-za-mN-ZA-M/') || die;
- select(ROT13); $|=1; select(STDOUT);
- print "Type two lines of stuff, and I'll ROT13 it while you wait.\n".
- "If you type fast, you might be able to type both of your\n".
- "lines before I get a chance to translate the first line.\n";
- $_ = <STDIN>; print ROT13 $_;
- $_ = <STDIN>; print ROT13 $_;
- close(ROT13);
- print "Thanks.\n\n";
-
- # Inspecting the disks.
- print "Let's look at the disks you have installed...\n\n";
-
- $x = "\0\0";
- syscall($OS2_Config, $x, 2);
- print "You have ", unpack("S", $x), " floppy disks,\n";
-
- $x = " ";
- syscall($OS2_PhysicalDisk, 1, $x, 2, 0, 0);
- ($numdisks) = unpack("S", $x);
-
- print "and $numdisks partitionable disks.\n\n";
- for ($i = 1; $i <= $numdisks; $i++) {
- $disk = $i . ":";
- $handle = " ";
- syscall($OS2_PhysicalDisk, 2, $handle, 2, $disk, 3);
- ($numhandle) = unpack("S", $handle);
- $zero = pack("C", 0);
- $parmblock = " " x 16;
- syscall($OS2_IOCtl, $parmblock, $zero, 0x63, 9, $numhandle);
- ($x, $cylinders, $heads, $sect) = unpack("SSSS", $parmblock);
- print "Hard drive #$i:\n";
- print " cylinders: $cylinders\n";
- print " heads: $heads\n";
- print " sect/trk: $sect\n";
- syscall($OS2_PhysicalDisk, 3, 0, 0, $handle, 2);
- }
-
- # I won't bother with the other stuff. You get the idea.
-
-