dd + progress bar

dd_progressbar_pv.sh

##########################################
# ofer shaham (c) 
# 5-2014
# to:   towards more generic usage
# from: a forked gist
##########################################
#dd command + pipe the progress using: pv
#depend_package: dd pv 
##########################################
set -o nounset
#set -e

if [ 1 ];then
    from_iso=/home/dao04/Downloads/archlinux-2014.05.01-dual.iso
    to_device=/dev/sdc
else

    #break on un-set string
    if [ $# -lt 2 ];then
        #path to *.iso files
        ls ~/Downloads/*.iso

        #path to storage devices
        ls -l /dev/sd[b-z]*
        echo "supply 2 arguments"
        echo 1 - the iso file
        echo 2 - the target storage device
        exit 1
    else
        from_iso="$1" #path to file.iso
        to_device="$2" #path to /dev/sdX
    fi


fi


#pv calculate relative progress - give it a file size
size_iso=`du -sb $from_iso | awk '{print $1}'`


#cmd="du -sb $from_iso | awk '{print $1}'"
#size_iso=$( eval "$cmd" )

####################### 
cmd="dd if=$from_iso | pv --eta --size $size_iso --progress --bytes --rate --wait > $to_device"


#######################
echo "[ press y to continue]"


echo "[cmd] $cmd"


read answer
if [ "$answer" = y ];then
    echo "[running]"
    eval "$cmd"
else
    echo "[skipping] "
fi