=head1 NAME

remctl_error - Retrieve the error from a failed remctl operation

=head1 SYNOPSIS

#include <remctl.h>

const char *B<remctl_error>(struct remctl *I<r>);

=head1 DESCRIPTION

remctl_error() returns the error from a previously failed remctl
operation.  Its only argument is a remctl struct as returned by
remctl_new().  If the previous remctl operation was successful, returns
the constant string "No error".

The caller may not modify the returned string.  The string may even be
stored in read-only memory and attempting to modify it may cause a memory
fault.  The returned pointer will be invalidated by the next call to any
remctl API function with the same client object, other than
remctl_error().

=head1 RETURN VALUE

remctl_error() returns either the previous error or the constant string
"No error".  It will never return NULL.

=head1 SEE ALSO

remctl_new(3), remctl_open(3), remctl_command(3), remctl_commandv(3),
remctl_output(3)

The current version of the remctl library and complete details of the
remctl protocol are available from its web page at
L<http://www.eyrie.org/~eagle/software/remctl/>.

=head1 AUTHOR

Russ Allbery <rra@stanford.edu>

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