NRPE Unable to read output

Hi… I have some problem with nrpe (I try version 2.0, 1.9 and 1.8 but
all doesen’t work correctly)… :frowning:

I’m in the folder where are the plugin and when I launch the command

./check_nrpe -H

the nrpe output is exact


but when I try to launch the command with -c flag for example

./check_nrpe -H -c check_load


/check_nrpe -H -c check_users

the nrpe output is

NRPE: Unable to read output

The command is in the nrpe.cfg and nrpe.cfg is readable from all user.
Nagios server is installed on a Debian Testing and client that i monitoring
are Debian Testing.
Where is the problem??? :roll: