use a parameter file with these options:
_seqFile
_treeFile
_rootAt _logFile _logValue _referenceSeq _outDir _outFile _treeOutFile _numberOfGainCategories
_numberOfLossCategories _numberOfRateCategories _maxNumOfIterationsModel _epsilonOptimizationModel
_maxNumOfIterationsBBL _epsilonOptimizationBBL _epsilonOptimization
_gainLossDist _calculateRate4site _calculeGainLoss4site _printTree _printPij_t _printLofPos
_performOptimizations _isHGT_normal_Pij _isReversible ...(a very partial list)
gainLoss.sh 3.1 November 2015 GAINLOSS.SH(1)