jmeter - Debug sampler Non-GUI -

is there way debug sampler results while running jmeter in non-gui mode? more looking way log variable substitutions happen while test run. tried enabling , disabling debug logs available packages, still not able substitutions.

here options:

1. sample_variables property. instance if need see values variables foo , bar add next line user.properties file lives under /bin folder of jmeter installation:

   sample_variables=foo,bar 

   and aforementioned variables values added separate columns .jtl results file. see apache jmeter properties customization guide more information on jmeter properties , ways of working them

2. you can print jmeter.log file via __log() or __logn() functions