cp command with progress bar

cp-progress.sh

cp_p()
{
   strace -q -ewrite cp -- "${1}" "${2}" 2>&1 \
      | awk '{
        count += $NF
            if (count % 10 == 0) {
               percent = count / total_size * 100
               printf "%3d%% [", percent
               for (i=0;i<=percent;i++)
                  printf "="
               printf ">"
               for (i=percent;i<100;i++)
                  printf " "
               printf "]\r"
            }
         }
         END { print "" }' total_size=$(stat -c '%s' "${1}") count=0
}

# 输出
# cp_p /mnt/raid/pub/iso/debian/debian-2.2r4potato-i386-netinst.iso /dev/null
# 76% [===========================================>                    ]

# 其他工具
# pv
# rsync

# 相关链接
# https://chris-lamb.co.uk/posts/can-you-get-cp-to-give-a-progress-bar-like-wget
# http://askubuntu.com/questions/17275/progress-and-speed-with-cp