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Top Forums Shell Programming and Scripting How to extract text from string using regular expressions Post 302247996 by ghostdog74 on Thursday 16th of October 2008 10:09:40 PM
Old 10-16-2008
Quote:
Originally Posted by jtung
sorry for not being more specific.

I have a file name that I want to extract the next 4 numbers after the _C
everything before and after that, I would like stripped off.

I tried using {filename:X:Y} but i don't think i'm on the latest ksh.

So i was reading up on the internet that I could use sed to accomplish this.

If there is another way to do this, please let me know.

thanks in advance!
Code:
# filename="/output/R34/2005_13_R34_C1042S_T83_CRFTXT_20081015.txt"
# echo $filename|sed 's/.*_C\(....\)S_.*/\1/'
1042

 

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FILEMTIME(3)								 1							      FILEMTIME(3)

filemtime - Gets file modification time

SYNOPSIS
int filemtime (string $filename) DESCRIPTION
This function returns the time when the data blocks of a file were being written to, that is, the time when the content of the file was changed. PARAMETERS
o $filename - Path to the file. RETURN VALUES
Returns the time the file was last modified, or FALSE on failure. The time is returned as a Unix timestamp, which is suitable for the date(3) function. EXAMPLES
Example #1 filemtime(3) example <?php // outputs e.g. somefile.txt was last modified: December 29 2002 22:16:23. $filename = 'somefile.txt'; if (file_exists($filename)) { echo "$filename was last modified: " . date ("F d Y H:i:s.", filemtime($filename)); } ?> ERRORS
/EXCEPTIONS Upon failure, an E_WARNING is emitted. NOTES
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
filectime(3), stat(3), touch(3), getlastmod(3). PHP Documentation Group FILEMTIME(3)
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