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Diffstat (limited to 'usr.sbin/efivar/efivar.8')
| -rw-r--r-- | usr.sbin/efivar/efivar.8 | 45 |
1 files changed, 30 insertions, 15 deletions
diff --git a/usr.sbin/efivar/efivar.8 b/usr.sbin/efivar/efivar.8 index 965527e634e7..e8a3a9f190bc 100644 --- a/usr.sbin/efivar/efivar.8 +++ b/usr.sbin/efivar/efivar.8 @@ -1,4 +1,4 @@ -.\" Copyright (c) 2003 Netflix, Inc +.\" Copyright (c) 2017 Netflix, Inc .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd September 29, 2016 +.Dd March 4, 2017 .Dt EFIVAR 8 .Os .Sh NAME @@ -40,6 +40,7 @@ .Op Fl -attributes .Op Fl -binary .Op Fl -delete +.Op Fl -device-path .Op Fl -fromfile Ar file .Op Fl -guid .Op Fl -hex @@ -51,7 +52,6 @@ .Op Fl -print-decimal .Op Fl -raw-guid .Op Fl -write -.Ar name Ns Op = Ns Ar value .Sh DESCRIPTION This program manages .Dq Unified Extensible Firmware Interface @@ -117,6 +117,9 @@ flags. No .Ar value may be specified. +.It Fl d Fl -device Fl -device-path +Interpret the variables printed as UEFI device paths and print the +UEFI standard string representation. .It Fl g Fl -guid flag is specified, guids are converted to names if they are known (and show up in @@ -138,33 +141,45 @@ flag is also listed, their values will be displayed. Do not display the variable name. .It Fl p Fl -print Print the value of the variable. -.It Fl d Fl -print-decimal -Treat the value of the variable as a number and print it as a -decimal. -This is currently unimplemented. .It Fl R Fl -raw-guid Do not substitute well known names for GUID numeric values in output. .It Fl w Fl -write -Write (replace) the variable specified with the value specified. +Write (replace) the variable specified with the value specified from +standard input. +No command line option to do this is available since UEFI variables +are binary structures rather than strings. +.Xr echo 1 +.Fl n +can be used to specify simple strings. .It Ar name Display the .Ar name environment variable. -.It Ar name Ns = Ns Ar value -Set the specified -.Ar name -to -.Ar value . -This is not yet implemented. -If the .Sh COMPATIBILITY The .Nm program is intended to be compatible (strict superset) with a progam of the same name included in the Red Hat libefivar package. +.Pp +Except the +.Fl d +and +.Fl -print-decimal +flags are not implmenented and never will be. +The +.Fl d +flag is a short-hand for +.Fl -device-path . .Sh SEE ALSO Appendix A of the UEFI specification has the format for GUIDs. All GUIDs .Dq Globally Unique Identifiers have the format described in RFC 4122. .El +.Pp +.Xr efivar 8 +.Sh HISTORY +The +.Nm +utility first appeared in +.Fx 12.0 . |