V.E.R.A. -- Virtual Entity of Relevant Acronyms (September 2014):
File System Consistency checK (Unix)
The Free On-line Dictionary of Computing (18 March 2015):
1. file system check. The Unix program
that checks a file system for internal consistency and bad
blocks etc. and can repair some faults.
fsck is often used after a crash when the file system has
been left in an inconsistent state, e.g. due to incomplete
flushing of buffers.
2. Used on Usenet newsgroup alt.sysadmin.recovery
as substitute for "fuck" and became more main-stream after the
Communications Decency Act.