Linux file being used is how to recover accidentally deleted.

1, lsof -a /data/test.txt　　 # lsof -a view less by using this file

 

2,  lsof | grep the Delete  　　 #lsof can view all running processes, grep to filter out deleted delete.

 

3, remember the process number " 9903 "

4, LL / proc / 9903 / fd 　　#fd file descriptor, process ID 9903

 

5, CAT / proc / 9903 / fd / 4　　# can view deleted files

. 6, CAT / proc / 9903 / FD /. 4> /data/test.txt　　# test.txt replace files copied to see / data / under Lane