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Full Discussion: Finding files in current directory when 100,000's files in current directory
Top Forums Shell Programming and Scripting Finding files in current directory when 100,000's files in current directory Post 302291831 by kewong007 on Thursday 26th of February 2009 11:44:42 AM
Old 02-26-2009
Power Finding files in current directory when 100,000's files in current directory
Hi All

I was wondering what is the most efficient way to find files in the current directory(that may contain 100,000's files), that meets a certain specified file type and of a certain age.

I have experimented with the find command in unix but it also searches all sub directories. I have found references on internet that specify maxdepth/depth to limit search to current directory but the flavour of unix I am using does not have the maxdepth flag, I have read the man pages of find command and cannot find any way to limit search to current directory.

Can I use a unix ls command and pipe the output to another built in unix command that can check for age of file(remembering it can handle searching 100,000s of files)?

I seem to be having much issues with this and have not come up with a simple solution.

Can someone give me a sample unix script of what to do?
 

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LEARN ABOUT CENTOS

whereis

WHEREIS(1)							   User Commands							WHEREIS(1)

NAME

       whereis - locate the binary, source, and manual page files for a command

SYNOPSIS

       whereis [options] [-BMS directory... -f] name...

DESCRIPTION

       whereis	locates  the  binary,  source  and manual files for the specified command names.  The supplied names are first stripped of leading
       pathname components and any (single) trailing extension of the form .ext (for example: .c) Prefixes of s.  resulting  from  use	of  source
       code  control  are  also  dealt	with.  whereis then attempts to locate the desired program in the standard Linux places, and in the places
       specified by $PATH and $MANPATH.

OPTIONS

       -b     Search only for binaries.

       -m     Search only for manuals.

       -s     Search only for sources.

       -u     Only show the command names that have unusual entries.  A command is said to be unusual if it does not have just one entry  of  each
	      explicitly  requested  type.  Thus 'whereis -m -u *' asks for those files in the current directory which have no documentation file,
	      or more than one.

       -B list
	      Limit the places where whereis searches for binaries, by a whitespace-separated list of directories.

       -M list
	      Limit the places where whereis searches for manuals, by a whitespace-separated list of directories.

       -S list
	      Limit the places where whereis searches for sources, by a whitespace-separated list of directories.

       -f     Terminates the directory list and signals the start of filenames.  It must be used when any of the -B, -M, or -S options is used.

       -l     Output list of effective lookup paths the whereis is using.  When non of -B, -M, or -S is specified the option will out  hard  coded
	      paths that the command was able to find on system.

EXAMPLE

       To find all files in /usr/bin which are not documented in /usr/man/man1 or have no source in /usr/src:

	      $ cd /usr/bin
	      $ whereis -u -ms -M /usr/man/man1 -S /usr/src -f *

FILE SEARCH PATHS

       By default whereis tries to find files from hard-coded paths, which are defined with glob patterns. The command attempst to use contents of
       $PATH and $MANPATH environment variables as default search path.  The easiest way to know what paths are  in  use  is  to  add  -l  listing
       option.	Effects of the -B, -M, and -S are display with -l.

AVAILABILITY

       The  whereis  command  is  part	of the util-linux package and is available from Linux Kernel Archive <ftp://ftp.kernel.org/pub/linux/utils
       /util-linux/>.

util-linux							    March 2013								WHEREIS(1)
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