unanswered questions

1)Hi all,

My requirement is that i have two files file1 and file2. file1 content is present in file2. i want to have a final which will have file2 contents but not the contents of file1 so I am running below command.

fgrep -vf file1 file2>file3

no of records in file1 is 65282
no of records in file2 is 88187

and fgrep -v is taking 25Minutes to complete the operation
Is there any other way we can do same operation in less time?

Ans–  http://www.unix.com/shell-programming-scripting/233406-solved-performance-issue-fgrep-vf-file1-file2-file3.html