On Linux/Android Terminal, `ls -alR [targetPath] >>filelist.txt`. On Windows, `dir /s [targetPath] >>filelist.txt`. I once moved voice recordings from a mobile phone's internal storage to the MicroSD card. The sound files has numerical rather than time stamp names. Later I realized that the date and time attributes were reset rather than preserved. Due to the lack of in-file metadata, those were lost. Don't rely on the file system and file manager to keep memory of the date and time information of files. Preserve them in a file list.