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Top Forums UNIX for Dummies Questions & Answers How to search all subdirectories? Post 71771 by zazzybob on Sunday 15th of May 2005 12:31:07 AM
Old 05-15-2005
But what happens when your chief exec has a legitimate file called "core" in his or her home directory that contains their core budget proposals for the year?

Far safer to do something like....
Code:
find /some/path/here -name "core" -type f -exec file {} \; | 
	awk -F: '/core file/ {print $1}' | xargs -t rm

You might need to change the awk depending on your OS

If you keep seeing a core file dumped in the same place time after time (and you can't fix the application thats generating itself directly), just
Code:
>/path/to/core
chmod 400 /path/to/core

This will truncate the core file to 0 bytes, and then make it read only - now when the core dumps, it won't be able to overwrite this file and the core file will remain at 0 bytes. Sloppy but it works...

Cheers
ZB
 

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FINCORE(1)						    BSD General Commands Manual 						FINCORE(1)

NAME
fincore -- query in-core status of file pages SYNOPSIS
fincore [-qs] file ... DESCRIPTION
The fincore utility queries and displays in-core status of specified files. Note that the result can already be stale when being output due to other activities in the system. Thus it should be used only for advisory purposes. The fincore utility accepts the following options. -q The quiet mode. Outputs nothing unless the file has in-core pages. -s The summary mode. Only shows number of pages. EXAMPLES
The following example shows that /bin/cat and /bin/cp are fully cached in-core while the other executables are not in-core. numbers shown in the default output are page indexes in the file of each in-core pages. % fincore /bin/c* /bin/cat: 0 1 2 3 /bin/chio: /bin/chmod: /bin/cp: 0 1 2 3 4 5 /bin/cpio: /bin/csh: % fincore -s /bin/c* /bin/cat: 4 / 4 in-core pages (100.00%) /bin/chio: 0 / 5 in-core pages (0.00%) /bin/chmod: 0 / 3 in-core pages (0.00%) /bin/cp: 6 / 6 in-core pages (100.00%) /bin/cpio: 0 / 36 in-core pages (0.00%) /bin/csh: 0 / 41 in-core pages (0.00%) SEE ALSO
mincore(2) AUTHORS
The fincore utility is written by YAMAMOTO Takashi. CAVEATS
The concept of page cache is an implementation detail of the kernel. The fincore utility works using some assumptions on the current imple- mentation. Thus it might stop working in a future version of NetBSD. BUGS
The amount of CPU time the current implementation of fincore utility would take is roughly proportional to the file sizes. Ideally it should be proportional to the number of in-core pages. BSD
January 5, 2012 BSD
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