augmatch - Man Page

inspect and match contents of configuration files


augmatch [Options] FILE


augmatch prints the tree that Augeas generates by parsing a configuration file, or only those parts of the tree that match a certain path expression. Parsing is controlled by lenses, many of which ship with Augeas. augmatch to select the correct lens for a given file automatically unless one is specified with the --lens option.


-a,  --all

Print all tree nodes, even ones without an associated value. Without this flag, augmatch omits these nodes from the output as they are usually uninteresting.

-e,  --exact

Only print the parts of the tree that exactly match the expression provided with --match and not any of the descendants of matching nodes.

-I,  --include=DIR

Add DIR to the module loadpath. Can be given multiple times. The directories set here are searched before any directories specified in the AUGEAS_LENS_LIB environment variable, and before the default directories /usr/share/augeas/lenses and /usr/share/augeas/lenses/dist.

-l,  --lens=LENS

Use LENS for the given file; without this option, augmatch tries to guess the lens for the file based on the file's name and path which only works for files in standard locations.

-L,  --print-lens

Print the name of the lens that will be used with the given file and exit.

-m,  --match=EXPR

Only print the parts of the tree that match the path expression EXPR. All nodes that match EXPR and their descendants will be printed. Use --exact to print only matching nodes but no descendants.

-r,  --root=ROOT

Use directory ROOT as the root of the filesystem. Takes precedence over a root set with the AUGEAS_ROOT environment variable.

-S,  --nostdinc

Do not search any of the default directories for lenses. When this option is set, only directories specified explicitly with -I or specified in AUGEAS_LENS_LIB will be searched for modules.

-o,  --only-value

Print only the value and not the label or the path of nodes.

-q,  --quiet

Do not print anything. Exit with zero status if a match was found

Environment Variables


The file system root, defaults to '/'. Can be overridden with the -r command line option


Colon separated list of directories with lenses. Directories specified here are searched after any directories set with the -I command line option, but before the default directories /usr/share/augeas/lenses and /usr/share/augeas/lenses/dist


  # print the tree for /etc/exports
  augmatch /etc/exports

  # show only the entry for a specific mount
  augmatch -m 'dir["/home"]' /etc/exports

  # show all the clients to which we are exporting /home
  augmatch -eom 'dir["/home"]/client' /etc/exports

Exit Status

The exit status is 0 when there was at least one match, 1 if there was no match, and 2 if an error occurred.


Lenses and schema definitions in /usr/share/augeas/lenses and /usr/share/augeas/lenses/dist


David Lutterkort <>

See Also

Augeas project homepage <>


2021-06-29 Augeas 1.12.0