Programming and posix - April 2002

April 3, 2002
Solution Symposium
Page 33
hp e3000
programming
and posix
file management
• POSIX file descriptors instead of MPE file numbers
• a 32-bit integer field
• just a stream of bytes - no record boundaries!
• certain reserved file descriptors are always opened
when a process is created:
• 0 - stdin (program input)
• 1 - stdout (program output)
• 2 - stderr (program error message output)