KENV(1) BSD General Commands Manual KENV(1)NAMEkenv — dump or modify the kernel environment
kenv [-q] variable[=value]
kenv [-q] -u variable
The kenv utility will dump the kernel environment if invoked without
arguments. If the -h option is specified, it will limit the report to
kernel probe hints. If an optional variable name is specified, kenv will
only report that value. If the -u option is specified, kenv will delete
the given environment variable. If the environment variable is followed
by an optional value, kenv will set the environment variable to this
If the -q option is set, warnings normally printed as a result of being
unable to perform the requested operation will be suppressed.
Variables can be added to the kernel environment using the
/boot/loader.conf file, or also statically compiled into the kernel using
in the kernel config file. The file can contain lines of the form
name = value # this is a comment
where whitespace around name and '=', and everything after a '#' charac‐
ter, are ignored. Almost any printable character except '=' is accept‐
able as part of a name. Quotes are optional and necessary only if the
value contains whitespace.
SEE ALSOkenv(2), config(5), loader.conf(5), loader(8)HISTORY
The kenv utility appeared in FreeBSD 4.1.1.
BSD January 13, 2009 BSD