.TH AMENT_INDEX 1 "" "" ""
.SH NAME
ament_index \- query the ROS 2 ament resource index
.SH SYNOPSIS
.SY ament_index
.OP \fIresource-type\fR
.OP \fIresource-name\fR
.YS
.SH DESCRIPTION
.B ament_index
is part of ROS 2, the Robot Operating System. The ament resource index is
used to quickly query installed packages and some ROS system properties by
reading files from well-defined locations.
.SH RESOURCE INDEX
The ament resource index is looked for in all prefixes which are listed
in the environment variable
.B AMENT_PREFIX_PATH
and, for Debian, in
.BR /usr ,
unless the special environment variable
.B AMENT_PREFIX_NO_IMPLICIT_USR
is set to a non-empty value.
The resource files can be found under
.PP
.BI share/ament_index/resource_index/ resource-type / resource-name