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kenv(1): Add EXAMPLES to man page

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Add EXAMPLES section covering all the options

Approved by:	manpages (bcr@)
Differential Revision:	https://reviews.freebsd.org/D26664
This commit is contained in:
fernape 2020-10-05 13:49:45 +00:00
parent 529151196e
commit e457dbc584
1 changed files with 39 additions and 1 deletions
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40
bin/kenv/kenv.1
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@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd May 11, 2012
.Dd October 5, 2020
.Dt KENV 1
.Os
.Sh NAME
@ -102,6 +102,44 @@ Almost any printable character except
.Sq =
is acceptable as part of a name.
Quotes are optional and necessary only if the value contains whitespace.
.Sh EXAMPLES
Show kernel probe hints variable names and filter for the uart
device
.Bd -literal -offset indent
$ kenv -h -N | grep uart
hint.uart.0.at
hint.uart.0.flags
hint.uart.0.irq
hint.uart.0.port
hint.uart.1.at
hint.uart.1.irq
hint.uart.1.port
.Ed
.Pp
Show the value of a specific variable:
.Bd -literal -offset indent
$ kenv hint.uart.1.at
isa
.Ed
.Pp
Same as above but adding the name of the variable in the report:
.Bd -literal -offset indent
$ kenv -v hint.uart.1.at
hint.uart.1.at="isa"
.Ed
.Pp
Try to delete a variable and suppress warnings if any:
.Bd -literal -offset indent
$ kenv -q -u hint.uart.1.at
.Ed
.Pp
Set the value of the
.Ev verbose_loading
variable
.Bd -literal -offset indent
$ kenv verbose_loading="YES"
verbose_loading="YES"
.Ed
.Sh SEE ALSO
.Xr kenv 2 ,
.Xr config 5 ,