有台iphone 5莫名可用容量急剧减少，查看可用容易，估计有大约4~7G容量不见。 ssh到iphone,du -k查看并查找最占容间的前50个目录,发现明显 mobile/Library/Caches/com.apple.passd/com.apple.Shoebox 目录有问题，占用空量4G+,删除之，能释放近6G容量。 另外照片流也会占用不少容量。
附前50条记录:
"bytes";"dir";"id"
10291118;"mobile";1458101
5041749;"mobile/Library";1454199
4542087;"mobile/Library/Caches";1450783
4447000;"mobile/Library/Caches/com.apple.passd";1450713
4442425;"mobile/Library/Caches/com.apple.passd/com.apple.Shoebox";1450711
3070707;"mobile/Applications";664860
2178545;"mobile/Media";1458099
971237;"mobile/Media/DCIM";1454440
970566;"mobile/Media/DCIM/100APPLE";1454439
660713;"mobile/Media/PhotoStreamsData/1330973174";1458010
660713;"mobile/Media/PhotoStreamsData";1458011
638525;"mobile/Media/PhotoStreamsData/1330973174/100APPLE";1457952
544488;"mobile/Media/PhotoData";1455066
403330;"mobile/Media/PhotoData/Sync";1455058
403251;"mobile/Media/PhotoData/Sync/100SYNCD";1455056
351152;"stash";1468737
313584;"mobile/Applications/68C74FC1-8A0C-4369-8E86-4E599335F7EC";589987
254071;"mobile/Applications/68C74FC1-8A0C-4369-8E86-4E599335F7EC/Library";589955
254069;"mobile/Applications/68C74FC1-8A0C-4369-8E86-4E599335F7EC/Library/Application Support/No_Backup";589947
254069;"mobile/Applications/68C74FC1-8A0C-4369-8E86-4E599335F7EC/Library/Application Support";589948
204621;"mobile/Media/DCIM/100APPLE/IMG_0199.mov";1454398
181566;"mobile/Library/VoiceServices/Assets/zh-CN";1453650
181566;"mobile/Library/VoiceServices/Assets";1453651
181566;"mobile/Library/VoiceServices";1453652
143007;"mobile/Library/Mail";1452332
142401;"stash/share.VNy9as";1468736
140309;"stash/Applications.50zavX";1466111
139514;"mobile/Library/VoiceServices/Assets/zh-CN/synth_ting-ting_full_155mrf22_270_06.dat";1453645
134015;"mobile/Media/PhotoData/Thumbnails";1455062
131209;"mobile/Applications/68C74FC1-8A0C-4369-8E86-4E599335F7EC/Library/Application Support/No_Backup/iphone";589920
131208;"mobile/Applications/68C74FC1-8A0C-4369-8E86-4E599335F7EC/Library/Application Support/No_Backup/iphone/1.0.226789.rsb";589919
129490;"mobile/Applications/06E1377D-3D25-4736-96B7-287255AC8DC3";556778
129399;"mobile/Applications/06E1377D-3D25-4736-96B7-287255AC8DC3/VoiceGuideAll.app";556774
128167;"mobile/Media/DCIM/100APPLE/IMG_0223.MOV";1454419
122421;"mobile/Applications/68C74FC1-8A0C-4369-8E86-4E599335F7EC/Library/Application Support/No_Backup/ipad2";589918
122420;"mobile/Applications/68C74FC1-8A0C-4369-8E86-4E599335F7EC/Library/Application Support/No_Backup/ipad2/1.0.226789.rsb";589917
116232;"mobile/Applications/F32D96FF-8020-4BFE-BF3A-C22B7F4E6EF6";660087
116131;"mobile/Applications/F32D96FF-8020-4BFE-BF3A-C22B7F4E6EF6/PvZ-iPhone_ZH.app";660084
114695;"mobile/Applications/9ADE3F3B-D880-4918-A565-09B879094997";617869
110752;"mobile/Applications/06E1377D-3D25-4736-96B7-287255AC8DC3/VoiceGuideAll.app/data";556488
105033;"mobile/Applications/F8F8FE94-CA5A-4272-92C4-276948EE1706";663324
105029;"mobile/Applications/F8F8FE94-CA5A-4272-92C4-276948EE1706/AR.Rescue.app";663310
99381;"mobile/Applications/0CCB1B6C-9EE9-4F4B-852F-1ED0C26113C2";558084
99379;"mobile/Applications/0CCB1B6C-9EE9-4F4B-852F-1ED0C26113C2/MerriamWebster.app";558081
97250;"root";1458263
94877;"root/Library";1458252
94852;"root/Library/Caches";1458221
94550;"mobile/Media/DCIM/100APPLE/IMG_0172.mov";1454373
89964;"mobile/Applications/0CCB1B6C-9EE9-4F4B-852F-1ED0C26113C2/MerriamWebster.app/definitions.db";557980
89116;"mobile/Library/Mail/ExchangeActiveSync979797EC-C70C-4940-9076-2BA004C4C5DD";1451893