Provided by: ohai_8.21.0-1_all 
NAME
ohai - The man page for the ohai command line tool.
Ohai is a tool that is used to detect attributes on a node, and then provide these attributes to the
chef-client at the start of every chef-client run. Ohai is required by the chef-client and must be
present on a node. (Ohai is installed on a node as part of the chef-client install process.)
The types of attributes Ohai collects include (but are not limited to):
• Platform details
• Network usage
• Memory usage
• Processor usage
• Kernel data
• Host names
• Fully qualified domain names
• Other configuration details
Attributes that are collected by Ohai are automatic attributes, in that these attributes are used by the
chef-client to ensure that these attributes remain unchanged after the chef-client is done configuring
the node.
ohai is the command-line interface for Ohai, a tool that is used to detect attributes on a node, and then
provide these attributes to the chef-client at the start of every chef-client run.
OPTIONS
This command has the following syntax:
ohai OPTION
This tool has the following options:
ATTRIBUTE_NAME ATTRIBUTE NAME ...
Use to have Ohai show only output for named attributes.
-d PATH, --directory PATH
The directory in which Ohai plugins are located. For example: /etc/ohai/plugins.
-h, --help
Shows help for the command.
-l LEVEL, --log_level LEVEL
The level of logging that will be stored in a log file.
-L LOGLOCATION, --logfile c
The location in which log file output files will be saved. If this location is set to something
other than STDOUT, standard output logging will still be performed (otherwise there would be no
output other than to a file).
-v, --version
The version of Ohai.
AUTHOR
Opscode
Ohai 7.0.0 OHAI(1)