iostat: Update manual page

[sysstat] / man / iostat.in

diff --git a/man/iostat.in b/man/iostat.in
index 9f08ed0bd36d2420bdc4976cfdf159eba09b2fcd..543ec052d6f9f8ec13998b5abcfb939add735925 100644 (file)
--- a/man/iostat.in
+++ b/man/iostat.in
@@ -1,11 +1,11 @@
-.TH IOSTAT 1 "OCTOBER 2015" Linux "Linux User's Manual" -*- nroff -*-
+.TH IOSTAT 1 "AUGUST 2016" Linux "Linux User's Manual" -*- nroff -*-
 .SH NAME
 iostat \- Report Central Processing Unit (CPU) statistics and input/output
 statistics for devices and partitions.
 .SH SYNOPSIS
 .ie 'yes'@WITH_DEBUG@' \{
 .B iostat [ -c ] [ -d ] [ -h ] [ -k | -m ] [ -N ] [ -t ] [ -V ] [ -x ] [ -y ] [ -z ]
-.B [ -j { ID | LABEL | PATH | UUID | ... } ]
+.B [ -j { ID | LABEL | PATH | UUID | ... } ] [ -o JSON ]
 .B [ [ -H ] -g
 .I group_name
 .B ] [ -p [
@@ -20,7 +20,7 @@ statistics for devices and partitions.
 .\}
 .el \{
 .B iostat [ -c ] [ -d ] [ -h ] [ -k | -m ] [ -N ] [ -t ] [ -V ] [ -x ] [ -y ] [ -z ]
-.B [ -j { ID | LABEL | PATH | UUID | ... } ]
+.B [ -j { ID | LABEL | PATH | UUID | ... } ] [ -o JSON ]
 .B [ [ -H ] -g
 .I group_name
 .B ] [ -p [
@@ -312,6 +312,10 @@ Display statistics in megabytes per second.
 .IP -N
 Display the registered device mapper names for any device mapper devices.
 Useful for viewing LVM2 statistics.
+.IP "-o JSON"
+Display the statistics in JSON (Javascript Object Notation) format.
+JSON output field order is undefined, and new fields may be added
+in the future.
 .IP "-p [ { device [,...] | ALL } ]"
 The -p option displays statistics for
 block devices and all their partitions that are used by the system.