Michael
Xian

    #!/bin/bash
    if  [ -z "$1" ]; then
        echo "Please input files to be wiped"
        exit 0
    fi
    START=$(date +%s)
    echo "Warning: wiping files irrecoverably"
    for FILE1 in "$@"
    do
        if [ ! -f $FILE1 ]; then
            continue
        fi
        #find size of file
        SIZE=$(wc -c <"$FILE1")
        if [ "$SIZE" -eq 0 ]; then
            continue
        fi
        echo -e "\r$FILE1"
        for i in {0..5}
        #wipe 5 times
        do
            #fill file with 0s
            dd if=/dev/zero of="$FILE1" bs="$SIZE" count=1
        done
        #unlink file after
        rm "$FILE1"
    done
        echo -en "\rDone     \n"
        END=$(date +%s)
        ELAPSED=$(($END-$START))
        echo "$ELAPSED second(s) passed"

            #!/bin/bash
    SIXTEENMEGABYTES="\x00"
    for a in {0..24}
    do
        SIXTEENMEGABYTES=$SIXTEENMEGABYTES$SIXTEENMEGABYTES
    done

    if  [ -z "$1" ]; then
        echo "Please input files to be wiped"
        exit 0
    fi
    START=$(date +%s)
    echo "Warning: wiping files irrecoverably"
    for FILE1 in "$@"
    do
        SIZE=$(wc -c <"$FILE1")
        REPS=$(($SIZE/16777216+1)) #Calculate reps needed
        echo -e "\r$FILE1"
        i="0"
    while [ $i -lt $SIZE ]
            do
                echo -ne $SIXTEENMEGABYTES | dd conv=notrunc bs=1 count=16777216 seek="$i" of="$FILE1" 2> /dev/null
                #write 16 MBs
                i="$(($i + 16777216))" #move pointer by 16 MBs
                echo -en "\r$(($i * 100 / $SIZE))%"
            done
    #    rm "$FILE1"
    done
        echo -en "\rDone     \n"
        END=$(date +%s)
        ELAPSED=$(($END-$START))
        echo "$ELAPSED second(s) passed"

        
        

        
            #!/bin/bash
    MEGABYTE="\x00"
    for a in {0..20}
    do
        MEGABYTE=$MEGABYTE$MEGABYTE
    done

    if  [ -z "$1" ]; then
        echo "Please input files to be wiped"
        exit 0
    fi
    START=$(date +%s)
    echo "Warning: wiping files irrecoverably"
    for FILE1 in "$@"
    do
        SIZE=$(wc -c <"$FILE1")
        REPS=$(($SIZE/1048576+1))
        echo -e "\r$FILE1"
        i="0"
    while [ $i -lt $SIZE ]
            do
                echo -ne $MEGABYTE | dd conv=notrunc bs=1 count=1048576 seek="$i" of="$FILE1" 2> /dev/null
                i="$(($i + 1048576))"
                echo -en "\r$(($i * 100 / $SIZE))%"
            done
        rm "$FILE1"
    done
        echo -en "\rDone     \n"
        END=$(date +%s)
        ELAPSED=$(($END-$START))
        echo "$ELAPSED second(s) passed"