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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:
Fernando Apesteguía 2020-10-05 13:49:45 +00:00
parent 5145778475
commit a8f6fe34fd
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 @@
.\" .\"
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd May 11, 2012 .Dd October 5, 2020
.Dt KENV 1 .Dt KENV 1
.Os .Os
.Sh NAME .Sh NAME
@ -102,6 +102,44 @@ Almost any printable character except
.Sq = .Sq =
is acceptable as part of a name. is acceptable as part of a name.
Quotes are optional and necessary only if the value contains whitespace. 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 .Sh SEE ALSO
.Xr kenv 2 , .Xr kenv 2 ,
.Xr config 5 , .Xr config 5 ,