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Top Forums Shell Programming and Scripting Validate date and time in filename by awk Post 302964553 by chakrapani on Friday 15th of January 2016 12:41:57 PM
Old 01-15-2016
Can you check perl version. I am assuming no perl modules are installed

---------- Post updated at 12:41 PM ---------- Previous update was at 12:27 PM ----------

Check this perl code. Works on my servers FreeBSD and RHEL

echo " mohan_moh.20160115.20160115.122442.txt" | perl dtchk.pl


FILENAME: dtchk.pl
Code:
use strict;
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
my $yyyymmdd = sprintf "%.4d%.2d%.2d", $year+1900, $mon+1, $mday;

### CHECK THIS LINE
my $last="122442"; # Just make this to whatever required like Date time etc etc


# TEST with below file name to match my system date
#mohan_moh.20160115.20160115.122442.txt"

while (<STDIN>) {
        chomp;
        if ( $_ =~ m/mohan_moh\.\Q$yyyymmdd\E\.\Q$yyyymmdd\E\.\Q$last\E\.txt/ )
        { print "\n$_ FILEName is [ OK ]\n"; }
        else
        { print "\n $_ FILEName is [  BAD ]\n"; }
}

Can be improved a lot.
 

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FILEATIME(3)								 1							      FILEATIME(3)

fileatime - Gets last access time of file

SYNOPSIS
int fileatime (string $filename) DESCRIPTION
Gets the last access time of the given file. PARAMETERS
o $filename - Path to the file. RETURN VALUES
Returns the time the file was last accessed, or FALSE on failure. The time is returned as a Unix timestamp. EXAMPLES
Example #1 fileatime(3) example <?php // outputs e.g. somefile.txt was last accessed: December 29 2002 22:16:23. $filename = 'somefile.txt'; if (file_exists($filename)) { echo "$filename was last accessed: " . date("F d Y H:i:s.", fileatime($filename)); } ?> ERRORS
/EXCEPTIONS Upon failure, an E_WARNING is emitted. NOTES
Note The atime of a file is supposed to change whenever the data blocks of a file are being read. This can be costly performance-wise when an application regularly accesses a very large number of files or directories. Some Unix filesystems can be mounted with atime updates disabled to increase the performance of such applications; USENET news spools are a common example. On such filesystems this function will be useless. Note Note that time resolution may differ from one file system to another. Note The results of this function are cached. See clearstatcache(3) for more details. Tip As of PHP 5.0.0, this function can also be used with some URL wrappers. Refer to "Supported Protocols and Wrappers" to determine which wrappers support stat(3) family of functionality. SEE ALSO
filemtime(3), fileinode(3), date(3). PHP Documentation Group FILEATIME(3)
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