command not found

[apollo007fd]

when I install and execute the command, the error "command not found" arised. but there was no error during my installation. the data is sparse with some vector features, but I think this error has nothing to do with my data.

xxx@xxx:\~/software/LibffmGenerator$ head train_0_label.csv
0,627,17557009,8203,27748,690929,109,1,0,6,189.0,3,,,1,2,1 4 3,1,2.0,,93 70 37 109 75 76 28 29 42 73 39 46 62 36 11 117,47 58 53 71,,,100 72 80 131 37 47 71 8 113 28 6 20 46 59 10 114,369060 527758 678945 83318 482526,102474 1 01564 4837 34154 38532,,13 10,2 1,9891 689 4801 3383 945,8704 8570 3855 8204 8282,
1,1502,17401944,9056,13766,988736,79,21,0,4,232.0,4,,,0,1,0,2,1.0,,,,,,,,18185 18468 110744 24701 50094,,13,0,,81 93 605 8197 4261 9629,
0,1993,55569517,44008,366845,1232232,79,21,0,4,802.0,1,,,1,1,3 1 2,7,1.0,,93 86 109 12 98 47 75 8 29 49 6 73 72 4  6 112 36 11 118 59 122 39 71 23 57 116 65 3,47 9 32,,,100 72 37 116 13 71 8 50 6 42 76 27 46 94 68 56 26 52 131 1 07 113 73 62 121 123 59 129 93,498821 348386 711071 109558 370311,90248 39727 56819 19826 36865,,5 13,1,5561 2522                                                                                 46 9826 5396,6972 9292 8402 2474 1503,
0,1505,17799681,285,13953,328499,20,1,0,6,711.0,5,,,3,0,1,7,1.0,,,,,,116 13 78 30 9 121 94,,18752 56906 18185 561 83 56819,,11,1,1307 2447 185 9826 6217,1732 509 3600 6145 1104,
0,210,10887549,33027,158787,1047515,35,45,0,4,549.0,5,,,0,0,3 1,2,1.0,,75 29 36 11,24 73 52 21 30,,,,460714 69572 3 526870 27326 775554,66348 117586 34410 109981 94093,,10,1,4535 644 537 5089 9826,1704 3929 6442 6238 3773,
0,235,22378147,702,15634,1517041,35,24,5615,11,85.0,3,,,1,2,3 1,7,2.0,,70 77 37 47 75 8 29 49 6 42 73 46 35 56 36  11 118 100 76 48 28 106 67 84 71 23 17 9 87,70 54,,,52 72 80 131 37 116 11 13 79 8 113 69 6 42 9 89 46 121 59 14 64 129,730501 538596 243544 256050 100680,85039 98059 91187 109745 68730,,11,2,727 3919 3414 5082 2746,5566 1380 7477 2391 3432,
0,986,7259705,327,127947,165916,22,67,113,9,0.0,5,,,0,0,0,0,2.0,,98 75 29 36 11,73,,,,246864,,,0,0,7684 8840 6143 5596 5899,,
0,860,21596931,9056,130718,499035,79,21,0,4,928.0,4,,,0,2,1 3,7,1.0,,93 70 98 76 75 28 16 106 29 59 67 49 41 6 95 46 116 36 11,,,,,53354 659836 696798 511862 6537,1225 90248 117586 109344 98086,,11,1,2353 8034 9826 4582 6816,7 684 6100 9708 4159 895,
0,55,59286353,17597,51385,1774967,35,27,0,6,306.0,2,,,1,2,0,2,2.0,,75 29,22 46 70 72 54,,,116 73,53354 532453,500 37 56505 19007 24289 22795,,13 10,2,5099 7816 1564 6562 8853,195 9153 345 6064 7383,
0,1139,13048663,18621,154634,206919,35,21,0,4,161.0,1,,,0,0,0,2,2.0,,75 29,46 29,,,,147950 57239,23107 37224 9500 7 117462 60276,,10,0,9389 9947 2159 7641 9749,2700 163 5927 4462 2670,
xxx@xxx:\~/software/LibffmGenerator$ g++ -o LibffmGenerator.out LibffmGenerator.cpp -std=c++0x
xxx@xxx:\~/software/LibffmGenerator$ LibffmGenerator.out train_0_label.csv
LibffmGenerator.out：command not found

I don't know why I encounter this problem. Thank you very much to provide this tool.