cd 01*
ls *sgy > sgy.list
cd ../02*
ls *sgy > sgy.list
cd ../03*
ls *sgy > sgy.list
cd ../04*
ls *sgy > sgy.list
cd ../05*
ls *sgy > sgy.list
cd ../06*
ls *sgy > sgy.list
cd ../07*
ls *sgy > sgy.list
cd ../08*
ls *sgy > sgy.list
cd ../09*
ls *sgy > sgy.list
cd ../10*
ls *sgy > sgy.list
cd ../11*
ls *sgy > sgy.list
cd ../12*
ls *sgy > sgy.list
cd ..