Duplicated: For those who cannot use lsof on a jailbroken iDevice
From Apple signed fake device attributes? If you find the lsof not working with a message like ‘lsof: PID 3206 information error: Cannot allocate memory’, then you may need http://pupil.io8.org/pub/iphone/misc/lsof/lsof-arm7-iOS4.2 from http://modmyi.com/forums/native-iphone-ipod-touch-app-discussion/721184-lsof-problem.html. Then chmod +x lsof-arm7-iOS4.2 Tested under iOS 6.1.3 on iPod Touch 4. Incoming search terms:lsof information error cannot allocate memoryLink to this post!