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fix description of $RANDOM, which is not limited to 15 bit any more

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as a device to determine whether arc4random(3) is in effect or not.
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tg
2006-09-13 16:14:29 +00:00
parent aeb7922065
commit f2eafb3044
1 changed files with 11 additions and 15 deletions
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mksh.1
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@ -1,8 +1,7 @@
.\" $MirOS: src/bin/mksh/mksh.1,v 1.58 2006/08/28 03:31:01 tg Exp $ .\" $MirOS: src/bin/mksh/mksh.1,v 1.59 2006/09/13 16:14:29 tg Exp $
.\" $OpenBSD: ksh.1,v 1.116 2006/07/26 10:13:25 jmc Exp $ .\" $OpenBSD: ksh.1,v 1.116 2006/07/26 10:13:25 jmc Exp $
.\" $OpenBSD: sh.1tbl,v 1.53 2004/12/10 01:56:56 jaredy Exp $
.\" .\"
.Dd August 28, 2006 .Dd September 13, 2006
.Dt MKSH 1 .Dt MKSH 1
.Os MirBSD .Os MirBSD
.Sh NAME .Sh NAME
@ -1546,23 +1545,20 @@ May be unset or
.Dv NULL .Dv NULL
if the shell doesn't know where it is. if the shell doesn't know where it is.
.It Ev RANDOM .It Ev RANDOM
A pseudo-random number generator.
Every time Every time
.Ev RANDOM .Ev RANDOM
is referenced, it is assigned the next random number in the range is referenced, it is assigned a pseudo-random number first.
0\-32767. By default, if available,
By default,
.Xr arc4random 3 .Xr arc4random 3
is used to produce values. is used to produce unsigned 31\-bit values (0\-2147483647)
If the variable whose quality depends on the operating environment.
If
.Ev RANDOM .Ev RANDOM
is assigned a value, the value is used as the seed to is assigned a value, it is used as the seed to
.Xr srand 3 .Xr srand 3
and subsequent references of and subsequent references yield a semi-predictable sequence
.Ev RANDOM of unsigned 15\-bit results (0\-32767) employing
will use .Xr rand 3 .
.Xr rand 3
to produce values, resulting in a predictable sequence.
.It Ev REPLY .It Ev REPLY
Default parameter for the Default parameter for the
.Ic read .Ic read