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Full Discussion: rm core files and pattern matching
Top Forums UNIX for Dummies Questions & Answers rm core files and pattern matching Post 302247218 by littleIdiot on Wednesday 15th of October 2008 07:42:07 AM
Old 10-15-2008
rm core files and pattern matching
Hi,

I am trying to delete a load of core files, but make sure I only delete core files. The system I am using has many files with core in the name, so I obviously can not simply search for "core".

I have tried using the 'find' command with pattern matching via [0-9], and know that his is the way forward. However, I can not work out how to ensure there are no alphabetic characters in the file extension.

So far I have the following:
Code:
find ./ -type f -name "core.[0-9]*" -exec rm -f {} \;

However, this will still delete files called "core.1a". Please do not question why anyone would call I file this - it just might be the case, and I have to ensure I avoid these files.

So I need a regular expression that will find:
files
starting with "core."
with an extension of one or more numbers
without an alphabetic lower or uppercase character in the extension

Must be a pretty standard cron job set up an many systems I imagine?
 

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LEARN ABOUT HPUX

gcore

gcore(1)						      General Commands Manual							  gcore(1)

NAME

       gcore - get core images of running processes

SYNOPSIS

       filename] process-id...

DESCRIPTION

       The command creates a core image of each specified process.  By default, the name of the core image file for process-id will be The process
       information in the core file can be obtained by using debuggers.

       When the command creates a core image of each specified process, the process is temporarily stopped.  Further, when the	creation  of  core
       image is complete, the process continues to execute.

   Options
       Creates the core file with name of the file as
		      If multiple process-id values are specified, filename will be common for all the core image files.  See the section.

   Operands
       process-id     The process ID for which a core image file will be created.

RETURN VALUE

       Upon completion, exits with one of the following values:

	      A core file was successfully created.

	      An error condition was encountered.
		     In such a case, the creation of a core file is not guaranteed.  The error conditions could be because of

		     o	A nonexistent or incorrect process ID was specified.

		     o	An invalid option was specified.

		     o	The current working directory of the process or directory from which was invoked had no write permissions.

		     o	The current working directory of the process was not accessible.

		     o	The file system is full.

EXAMPLES

   Example 1
       Dump the core image of process 1030 in the file "core.1030".

   Example 2
       Dump the core image of the process 1030 in the file "test.1030".

   Example 3
       Dump the core image of the processes 1030, 1031, 1032, and 1033 in the files "core.1030", "core.1031", "core.1032", "core.1033".

   Example 4
       Dump the core image of the processes 1030, 1031, 1032, and 1033 in the files

FILES

       Core image file for process-id.	(Both where is invoked and the current working directory of the process.)

AUTHOR

       was developed by Chris Bertin (HP).

SEE ALSO

       adb(1), gdb(1), kill(1), ttrace(2), a.out(4), core(4).

																	  gcore(1)
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