md_files
 id contenthash                               pathnamehash                              contextid  component   filearea   itemid  filepath                  filename                    userid  filesize  mimetype
  8 9ac8c2121aa0b2bdd5f377128475d31731ea7f67  98ade9bbd8beea3fc2f39969da3966dd41862192   1         mod_iassign  ilm       0       /iassign/ilm/igeom/5919/  iGeom.jar                   2       1026088   application/java-archive
 53 d972252264edf1fed62ab904df42ba3a176ce5dc  a4eaa25bd1b35e2e2834b6fa7309b662a3658eff  21         mod_iassign  activity  0       /                         exerc_imprime1_e_2_v2.ivph  2       307       text/plain

Em:
  8 /var/data/moodledata_3.2.1plus/filedir/9a/c8/9ac8c2121aa0b2bdd5f377128475d31731ea7f67
 53 /var/data/moodledata_3.2.1plus/filedir/d9/72/d972252264edf1fed62ab904df42ba3a176ce5dc
 {"mapping":{},"src":{"programName":"firstProgram","functions":[{"isMain":true,"name":"Principal","vars":{},"params":{},"type":"main","nodes":[],"$$hashKey":"006"}]},"testCases":[{"input":
 "1","output":"1 2","currentIndex":0,"$$hashKey":"008"},{"input":"2","output":"1 2","currentIndex":0,"$$hashKey":"00A"}]}
 -> solucao1_aluno1.ivph
 
 # cp -p /home/leo/projetos/iMA/ima/ivprog_html5/versao2014/exemplos/sol_2.1_selecao_soma_angulos_triangulo_marcos_nunes_2014.ivph /var/data/moodledata_3.2.1plus/filedir/d9/72/d972252264edf1fed62ab904df42ba3a176ce5dc
 # ll /var/data/moodledata_3.2.1plus/filedir/d9/72/d972252264edf1fed62ab904df42ba3a17
 www-data www-data 4399 Mar  3 16:18 /var/data/moodledata_3.2.1plus/filedir/d9/72/d972252264edf1fed62ab904df42ba3a176ce5dc
 UPDATE md_files SET filesize = '4399', source = NULL , referencefileid = NULL WHERE id = '53' LIMIT 1 ;
 
 UPDATE md_files SET filesize = '307', source = NULL , referencefileid = NULL WHERE id = '53' LIMIT 1 ;