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Full Discussion: get the latest file by reading the date in the filename.
Top Forums UNIX for Dummies Questions & Answers get the latest file by reading the date in the filename. Post 302261765 by prsshini on Tuesday 25th of November 2008 02:01:52 PM
Old 11-25-2008
get the latest file by reading the date in the filename.
Hi,
I grep for a pattern in a list of files.

"grep -i -l $pattern *.datx*"

it may give me n number of files.
say for eg, it gives me 2 files.
lock_eicu_20071228_00000000.dat_20071228_05343100
lock_eicu_20080501_00000000.dat_20080501_05343900

out of these 2 files I need to get the latest file according to the date present after the .dat extn. As 20071228 is older than 20080501, i need to get the second file.

so in the above eg, i need to get the filename
lock_eicu_20080501_00000000.dat_20080501_05343900
can u please help.
 

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LEARN ABOUT DEBIAN

bzegrep

BZGREP(1)						      General Commands Manual							 BZGREP(1)

NAME

       bzgrep, bzfgrep, bzegrep - search possibly bzip2 compressed files for a regular expression

SYNOPSIS

       bzgrep [ grep_options ] [ -e ] pattern filename...
       bzegrep [ egrep_options ] [ -e ] pattern filename...
       bzfgrep [ fgrep_options ] [ -e ] pattern filename...

DESCRIPTION

       Bzgrep  is  used to invoke the grep on bzip2-compressed files. All options specified are passed directly to grep.  If no file is specified,
       then the standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and  fed	to
       grep.

       If  bzgrep  is  invoked as bzegrep or bzfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, bzgrep
       uses it as the grep program to be invoked. For example:

	   for sh:  GREP=fgrep	bzgrep string files
	   for csh: (setenv GREP fgrep; bzgrep string files)

AUTHOR

       Charles Levert (charles@comm.polymtl.ca). Adapted to bzip2 by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.

SEE ALSO

       grep(1), egrep(1), fgrep(1), bzdiff(1), bzmore(1), bzless(1), bzip2(1)

																	 BZGREP(1)
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