Last modified: December 2025

URL: https://cxc.cfa.harvard.edu/ciao/ahelp/punlearn.html
AHELP for CIAO 4.18

punlearn

Context: Tools::Parameter

Synopsis

Restore system default parameter values

Syntax

punlearn toolname

Description

Restore the parameter values in the specified parameter file to the system defaults.


Examples

Example 1

punlearn dmlist

Searches the users PDIRS, PFILES, and UPARM for a system parameter file (the directories specified after the ";") and updates the user's writeable version with the system default values.

Example 2

punlearn dmcopy dmlist dmstat

Restores system defaults for each of the 3 named parameter files.


Parameters

name type ftype reqd
parameter_file string input yes

Detailed Parameter Descriptions

Parameter=parameter_file (string required filetype=input)

Parameter file name.

Name of the parameter file (with optional path) to restore to default settings. Multiple parameter files can be specified.


Bugs

There are no known bugs for this tool.

See Also

concept
parameter
tools::header
dmhistory, dmkeypar, dmmakepar, dmreadpar
tools::parameter
paccess, pdump, pget, pline, plist, pquery, pset