Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Determining file size for a list of files with paths Post 302555439 by Corona688 on Wednesday 14th of September 2011 06:04:03 PM
Old 09-14-2011
That's a useless use of cat. Use file redirection instead to save CPU time and avoid the unintended side-effects of having an extra pipe in the way.

-0 only works if the file's separated by NULLs. I'm guessing yours is separated by newlines.

Since you have -0 though, you're probably using the GNU utilities, which makes things simpler:

Code:
<filename xargs -d '\n' du -b --apparent-size -c | tail -n 1

 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Command to list Files less than or equal to 2k size

Hi, *.xml files stored on date wise folders. I need to extract *.xml files from all the folders. File size is lessthan or equal to 2K. Please let me know command or some shell program to due this job on linux m/c This is urgent, Thanks in advance - Bache Gowda (3 Replies)
Discussion started by: bache_gowda
3 Replies

2. UNIX for Dummies Questions & Answers

Files list which are more than 300 MB size

Hi, I need to find files list which are more than 300 MB size? My script It should search all inner directories too. How can I proceed? Any idea? (2 Replies)
Discussion started by: redlotus72
2 Replies

3. Shell Programming and Scripting

list the files with size in bytes

hi all plz help in listing the files with size in bytes. thnks -Bali (4 Replies)
Discussion started by: balireddy_77
4 Replies

4. Shell Programming and Scripting

How to read a list of paths from a file?

Hi everyone! I'm pretty bad at shell scripting and I am trying to create a java launcher. The idea is to store in a configuration file different paths (each for a different java version) and then, run a .sh file that would read the specified java path and execute the .jar file. This is what i have... (7 Replies)
Discussion started by: mostacholoco
7 Replies

5. UNIX for Dummies Questions & Answers

cat a list of directory paths only to a file

Hi! I would like to funnel a series of directories and subdirectories into a text file. This is the output I would like to see from a find command: /mypath/ABC_01/VISIT_01 /mypath/ABC_01/VISIT_02 /mypath/ABC_01/VISIT_03 /mypath/ABC_02/VISIT_01 /mypath/ABC_03/VISIT_01 I've tried: find... (2 Replies)
Discussion started by: goodbenito
2 Replies

6. Linux

Determining L2 cache size

Is there any way to know the L2 cache size from examinging to boot log. Here is my boot logLinux version 2.6.13-jaluna (root@localhost.localdomain) (gcc version 3.2.2) #4 Thu Apr 23 23:16:10 EDT 2009 TMS320DM643X port (C) VirtualLogix and others Designed for the EVMDM6437 board, Spectrum Digital... (3 Replies)
Discussion started by: mourya
3 Replies

7. UNIX for Dummies Questions & Answers

How to get size of a list of files with specified extension?

Command ls -l *cpp lists all cpp program files in a directory. It shows the size of each file. Using a calculator to work out the total size of the cpp files would be very tedious. Is there a way to get the total size from the command line? (5 Replies)
Discussion started by: resander
5 Replies

8. UNIX for Dummies Questions & Answers

How to list all files in dir and sub-dir's recursively along with file size?

I am very new to unix as well as shell scripting. I have to write a script for the following requirement. In have to list all the files in directory and its sub directories along with file path and size of the file Please help me in this regard and many thanks in advance. (3 Replies)
Discussion started by: nmakkena
3 Replies

9. UNIX for Dummies Questions & Answers

How to list files which have same size?

Hi guys, I need to do 100 files comparison after I sorted the files. There are no specific key for sorting so i plan to arrange the files based on the file size. The command that i used to sort the files by size is as per below:- ls -l | sort +4rn | awk '{print $5, $9}' The problem that i... (3 Replies)
Discussion started by: shahril
3 Replies

10. Shell Programming and Scripting

List duplicate files based on Name and size

Hello, I have a huge directory (with millions of files) and need to find out duplicates based on BOTH file name and File size. I know fdupes but it calculates MD5 which is very time-consuming and especially it takes forever as I have millions of files. Can anyone please suggest a script or... (7 Replies)
Discussion started by: prvnrk
7 Replies
FILESIZE(3)								 1							       FILESIZE(3)

filesize - Gets file size

SYNOPSIS
int filesize (string $filename) DESCRIPTION
Gets the size for the given file. PARAMETERS
o $filename - Path to the file. RETURN VALUES
Returns the size of the file in bytes, or FALSE (and generates an error of level E_WARNING) in case of an error. Note Because PHP's integer type is signed and many platforms use 32bit integers, some filesystem functions may return unexpected results for files which are larger than 2GB. EXAMPLES
Example #1 filesize(3) example <?php // outputs e.g. somefile.txt: 1024 bytes $filename = 'somefile.txt'; echo $filename . ': ' . filesize($filename) . ' bytes'; ?> ERRORS
/EXCEPTIONS Upon failure, an E_WARNING is emitted. NOTES
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
file_exists(3). PHP Documentation Group FILESIZE(3)
All times are GMT -4. The time now is 06:36 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy