这个shell脚本通过在一个GTK+对话框(使用小巧方便的对话框工具zenity，下载地址是http://download.chinaunix.net/download/0013000/12216.shtml)，来显示文件下载了百分之多少(%)。当我们在命令行下使用shell命令，比如用wget下载文件再配合这个脚本将是非常有用的。
相信该shell脚本是很有帮助的，代码如下：
#!/bin/sh
#http://hektor.umcs.lublin.pl/~mikosmul/computing/shell-scripts/view-download-progress
# Written by Michal Kosmulski <mkosmul _at_ users _dot_ sourceforge _dot_ net>
# This script is hereby put in the public domain.
# Display a dialog box with a progress bar showing how much of a file
# has been downloaded.
# Parameters:
# $1 file name
# $2 final file size (in bytes)
# Uses zenity
if [ $# != 2 ]; then
echo "Usage:"
echo "$0 file_name final_size"
exit 1;
fi
name="$1"
final_size="$2"
size=0
(
while (( size < final_size )); do
if [ -f "$name" ]; then
size=`ls -l "$name" | awk '{print $5}'`;
else
size=0
fi
echo -e '#'"${name}: ${size} of ${final_size}";
echo -e "100*${size}/${final_size};\nquit\n" | bc;
sleep 1;
done
echo '#'"${name}: Finished downloading - ${size} of ${final_size}";
) | zenity --title="Downloading file ${name}" --progress --percentage=0 |