Perl programming on mMPE/iX - August 2001

HP World Page 21August 21, 2001
predefined variables - a partial list
• $| or $OUTPUT_AUTOFLUSH
• By default, all Perl output is buffered (0). To enable automatic
flushing, set this variable to 1. Needed when doing MPE I/O which
is usually unbuffered.
• $$ or $PID
• POSIX PID of the current process
• $^O or $OSNAME
• operating system name (mpeix)
• @ARGV
• script parameters if any
• %ENV or $ENV{varname}
• accesses the POSIX environment variables