09-25-2001
VI relies upon the terminal settings. For instance,
if you are accessing UNIX via a vt100 terminal program
running on your PC then you must tell the terminal program
how to map these keys. All VI knows about is what your
$TERM environment variable is set to. The actual codes
sent through your termial program are up to the terminal
program sofware (not VI). If you are using some sort of
termial (not a program running on a PC) that has a number
pad, then you probably need to set your TERM variable
properly so that the keyboard codes are mapped properly.
In any case, make sure that your $TERM variable is set
exactly to what ever terminal you are using or emulating.
The man page for "termcap" and/or "terminfo" might be
interesting to you if you want to get more detaild info.
on termial capabilities and key mappings.
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LEARN ABOUT MOJAVE
random
RANDOM(4) BSD Kernel Interfaces Manual RANDOM(4)
NAME
random , urandom -- random data source devices.
SYNOPSIS
pseudo-device random
DESCRIPTION
The random device produces uniformly distributed random byte values of potentially high quality.
To obtain random bytes, open /dev/random for reading and read from it.
The same random data is also available from getentropy(2). Using the getentropy(2) system call interface will provide resiliency to file
descriptor exhaustion, chroot, or sandboxing which can make /dev/random unavailable. Additionally, the arc4random(3) API provides a fast
userspace random number generator built on the random data source and is preferred over directly accessing the system's random device.
/dev/urandom is a compatibility nod to Linux. On Linux, /dev/urandom will produce lower quality output if the entropy pool drains, while
/dev/random will prefer to block and wait for additional entropy to be collected. With Yarrow, this choice and distinction is not necessary,
and the two devices behave identically. You may use either.
The random device implements the Yarrow pseudo random number generator algorithm and maintains its entropy pool. The kernel automatically
seeds the algorithm with additional entropy during normal execution.
FILES
/dev/random
/dev/urandom
HISTORY
A random device appeared in the Linux operating system.
Darwin September 6, 2001 Darwin