sysenv.1

来自「minix操作系统最新版本（3.1.1）的源代码」· 1 代码 · 共 28 行

.TH SYSENV 1
.SH NAME
sysenv \- request system boot parameter
.SH SYNOPSIS
.B sysenv
.RI [ boot-variable "] ..."
.SH DESCRIPTION
.B Sysenv
requests the value of one or more boot variables.  For example
.B "sysenv\ memory"
returns the list of free memory at system startup.  Note that some
parameters have undergone "device translation" from a device name to
a decimal device number.
.PP
If no variable names are given then the entire boot environment is
listed.
.SH "SEE ALSO"
.BR svrctl (2),
.BR monitor (8),
.BR boot (8).
.SH DIAGNOSTICS
Exit code 0 with the variable's value printed to standard output if all
requested variables exist in the boot environment, exit code 1 on any
weird error, exit code 2 if one of the variables is not set, and exit
code 3 if both kind of errors occurred.
.SH AUTHOR
Kees J. Bot ([e-mail])