#!/bin/bash

    # bigfiles

    # List the n (or 10) largest files in the directory specified (or the
    # current directory by default), and all its subdirectories, together
    # with their sizes.

    # Version 5
    # Ian Barnes, 1 February 2001


    # Set default values

    debug=
    number="-10"

    # Parse command line arguments

    while [ ${#} -gt 0 ]
    do
        case ${1} in

        -*)
    	# Assume that what's after the - is a number
    	number=${1}
    	;;
        *)
    	# It's a directory
    	dir=${1}
        esac
        shift
    done

    [ $debug ] && echo number=${number}
    [ $debug ] && echo dir=${dir}

    # Get a list of all files (and directories etc)

    if [ ${dir} ]
    then
        if [ -d ${dir} ]
        then
    	files=$(du -ka ${dir} | cut -f2)
        else
    	echo Error: ${dir} is not a directory!
    	exit 1
        fi
    else
        files=$(du -ka | cut -f2)
    fi

    [ $debug ] && echo ${files}

    # Make sure we don't clobber any data

    tmp=".tmp_bigfiles"

    if [ -e ${tmp} ]
    then
        echo Error: $tmp already exists!
        exit 1
    fi

    # Write list of all regular files with sizes to $tmp

    for f in ${files}
    do
        if [ -f ${f} ]
        then
    	du -ka ${f} >> ${tmp}
        fi
    done

    [ $debug ] && cat ${tmp}

    # Sort the list and print the top -${number}

    sort -rn ${tmp} | head ${number}

    # Remove the temporary file

    rm -f ${tmp}