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codecaine · 01-11-2010, 10:06 AM

Here is a list of sizes you can search for using Find
-size n[ckMGTP]
True if the file's size, rounded up, in 512-byte blocks is n. If
n is followed by a c, then the primary is true if the file's size
is n bytes (characters). Similarly if n is followed by a scale
indicator then the file's size is compared to n scaled as:

k kilobytes (1024 bytes)
M megabytes (1024 kilobytes)
G gigabytes (1024 megabytes)
T terabytes (1024 gigabytes)
P petabytes (1024 terabytes)

I am running this command as administrator. This print any file name that is 1G or bigger. the + sign means greater than.

Code:

sudo find / -size +1G -print

so find searchers from the root directory which is / I use the -size parameter to set a size to search for then lastly I use the -print parameter to print out the results

codecaine · 01-11-2010, 11:59 AM

I decided to show you what a script would look like for checking for file size. The sourcecode is attached in a zip.

Code:

#!/bin/bash

########################################################

#            Check for file sizes                      #

#           coded by Jerome Scott II                   #

########################################################

#function print the usage of the program

usage()

{

    echo 'Usages:'

    echo 'Argument1: path of files to search'

    echo 'Argument2: the size of files in either bytes, kilobytes, megabytes, or gigabytes'

    echo '         -b bytes'

    echo '           -k kilobytes'

    echo '           -m megabytes'

    echo '           -g gigabytes'

    echo '         -t terabytes'

    echo 'Example:'

    echo './filesize /etc/ -k 10'

}

PARAM_SIZE=3

#check if there is enough parameters

if [ $PARAM_SIZE -ne 3 ]

then

    usage

    exit 1

fi

#if the directory exist continue

if [ -r $1 ]

then

#check for what type of file they are searching for. The du program in bash checks for disk usage -h if for human readable and "{}" is the file found in find put quotes around it because files might have spaces \; is a terminator for -exec function

case $2 in

     -b)

         echo "Searching for files greater than $3 bytes"

        find $1 -size \+$3c -exec du -h "{}" \;

        ;;

     -k)

        echo "Searching for files greater than $3 kilobytes"

        find $1 -size \+$3k -exec du -h "{}" \;

        ;;

     -m)

         echo "Searching for files greater than $3 megabytes"

        find $1 -size \+$3M -exec du -h "{}" \;

        ;;

     -g)

         echo "Searching for files greater than $3 gigabytes"

        find $1 -size \+$3G -exec du -h "{}" \;

        ;;

     -t)

         echo "Searching for files greater than $3 terabytes"

        find $1 -size \+$3T -exec du -h "{}" \;

        ;;

    *)

        usage

        exit 1

        ;;

esac

#file directory does not exist print error message

else

    echo 'Invalid file path'

    exit 1

fi

echo 'Search has completed'

***drdebcol*** · 01-11-2010, 08:32 PM

Great work. You did a good calculation there !