.\" Copyright © 2008 Per Andersson <avtobiff@gmail.com>
.\" Copyright © 2021 Bastian Germann
.\" This man page is covered by the GNU General Public License (GPLv2 or higher).
.TH fw_setenv 8 2021-06-23
.SH NAME
fw_setenv \- Tool for modifying the environment for the bootloader U\-Boot
.SH SYNOPSIS
fw_setenv \fIname\fP [ \fIvalue\fP ]
.SH DESCRIPTION
fw_setenv is a simple tool for modifying the environment for the bootloader U-Boot.
The variable \fIname\fP is updated to hold \fIvalue\fP if it is already set in the environment, else it is created and set.
If only the \fIname\fP argument is given, the corresponding variable is deleted.
This version of fw_printenv stems from libubootenv and does not hold a built-in default environment.
Instead, the default environment is read from a file.
.SH OPTIONS
.TP
.B -h
print a help message
.TP
.B -c, --config <filename>
configuration file (old fw_env.config)
.TP
.B -f, --defenv <filename>
default environment if no one found
.TP
.B -V
print program's version
.TP
.B -s, --script <filename>
read variables to be set from a script
.SH FILES
.TP
.B /etc/fw_env.config
Configuration file for fw_setenv.
Default value of the --config option.
.TP
.B /etc/u-boot-initial-env
Default U-Boot environment.
Default value of the --defenv option.
.SH SEE ALSO
fw_printenv(8)