消耗带宽
[英]Consuming bandwidth
问题描述
我知道如何编写一个基本的bash脚本，该脚本使用wget下载文件，但是如何在无限循环中运行此脚本以下载指定的文件，下载完成后将其删除，然后再次下载。
5 个解决方案
解决方案1
5 已采纳 2010-07-29 15:27:42
您正在寻找
while :
do
wget -O - -q "http://some.url/" > /dev/null
done
这将不会保存文件，不会输出无用的信息，并将内容一遍又一遍地转储到/dev/null
编辑以仅消耗带宽，请使用ping -f或ping -f -s 65507
解决方案2
3 2010-07-29 15:35:42
如果您的目标是最大化带宽，尤其是为了进行基准测试，请使用iperf 。 您在服务器和客户端上运行iperf ，它将使用您指定的协议和参数测试带宽。 它可以测试单向或双向吞吐量，并且可以选择尝试达到“目标”带宽利用率（即3Mbps）。
解决方案3
1 2010-07-29 15:01:23
通过编程，一切皆有可能。 :)
如果要尝试最大程度地利用Internet带宽，则可以启动wget的许多过程，并让它们同时下载一些大磁盘映像文件，同时将一些大文件发送回某个服务器。
细节留给实现，但这是最大化带宽的一种方法。
解决方案4
1 2010-07-29 15:02:25
如果要消耗网络带宽，则需要另一台计算机。 然后从IP地址为192.168.0.1的计算机A侦听端口（例如12345）。
$ netcat -l -p 12345
然后，从另一台计算机向其发送数据。
$ netcat 192.168.0.1 12345 < /dev/zero
解决方案5
0 2010-07-29 21:17:21
我想用curl来wget。 它是更可编辑的。 这是我编写的bash脚本的摘录，该脚本检查SVN版本，然后为用户提供下载稳定版或最新版本的选择。 然后解析出文件，将“用户设置”与脚本的其余部分分开。
svnrev=`curl -s -m10 mythicallibrarian.googlecode.com/svn/trunk/| grep -m1 Revision | sed s/"<html><head><title>mythicallibrarian - "/""/g| sed s/": \/trunk<\/title><\/head>"/""/g`
if ! which librarian-notify-send>/dev/null && test "$LinuxDep" = "1"; then
dialog --title "librarian-notify-send" --yesno "install librarian-notify-send script for Desktop notifications?" 8 25
test $? = 0 && DownloadLNS=1 || DownloadLNS=0
if [ "$DownloadLNS" = "1" ]; then
curl "http://mythicallibrarian.googlecode.com/files/librarian-notify-send">"/usr/local/bin/librarian-notify-send"
sudo chmod +x /usr/local/bin/librarian-notify-send
fi
fi
if [ ! -f "./librarian" ]; then
DownloadML=Stable
echo "Stable `date`">./lastupdated
else
lastupdated="`cat ./lastupdated`"
DownloadML=$(dialog --title "Version and Build options" --menu "Download an update first then Build mythicalLibrarian" 10 70 15 "Latest" "Download and switch to SVN $svnrev" "Stable" "Download and switch to last stable version" "Build" "using: $lastupdated" 2>&1 >/dev/tty)
if [ "$?" = "1" ]; then
clear
echo "mythicalLibrarian was not updated."
echo "Please re-run mythicalSetup."
echo "Done."
exit 1
fi
fi
clear
if [ "$DownloadML" = "Stable" ]; then
echo "Stable "`date`>"./lastupdated"
test -f ./mythicalLibrarian.sh && rm -f mythicalLibrarian.sh
curl "http://mythicallibrarian.googlecode.com/files/mythicalLibrarian">"./mythicalLibrarian.sh"
cat "./mythicalLibrarian.sh"| sed s/' '/'\\t'/g |sed s/'\\'/'\\\\'/g >"./mythicalLibrarian1" #sed s/"\\"/"\\\\"/g |
rm ./mythicalLibrarian.sh
mv ./mythicalLibrarian1 ./mythicalLibrarian.sh
parsing="Stand-by Parsing mythicalLibrarian"
startwrite=0
test -f ./librarian && rm -f ./librarian
echo -e 'mythicalVersion="'"`cat ./lastupdated`"'"'>>./librarian
while read line
do
test "$line" = "########################## USER JOBS############################" && let startwrite=$startwrite+1
if [ $startwrite = 2 ]; then
clear
parsing="$parsing""."
test "$parsing" = "Stand-by Parsing mythicalLibrarian......." && parsing="Stand-by Parsing mythicalLibrarian"
echo $parsing
echo -e "$line" >> ./librarian
fi
done <./mythicalLibrarian.sh
clear
echo "Parsing mythicalLibrarian completed!"
echo "Removing old and downloading new version of mythicalSetup..."
test -f ./mythicalSetup.sh && rm -f ./mythicalSetup.sh
curl "http://mythicallibrarian.googlecode.com/files/mythicalSetup.sh">"./mythicalSetup.sh"
chmod +x "./mythicalSetup.sh"
./mythicalSetup.sh
exit 0
fi
if [ "$DownloadML" = "Latest" ]; then
svnrev=`curl -s mythicallibrarian.googlecode.com/svn/trunk/| grep -m1 Revision | sed s/"<html><head><title>mythicallibrarian - "/""/g| sed s/": \/trunk<\/title><\/head>"/""/g`
echo "$svnrev "`date`>"./lastupdated"
test -f ./mythicalLibrarian.sh && rm -f mythicalLibrarian.sh
curl "http://mythicallibrarian.googlecode.com/svn/trunk/mythicalLibrarian">"./mythicalLibrarian.sh"
cat "./mythicalLibrarian.sh"| sed s/' '/'\\t'/g |sed s/'\\'/'\\\\'/g >"./mythicalLibrarian1" #sed s/"\\"/"\\\\"/g |
rm ./mythicalLibrarian.sh
mv ./mythicalLibrarian1 ./mythicalLibrarian.sh
parsing="Stand-by Parsing mythicalLibrarian"
startwrite=0
test -f ./librarian && rm -f ./librarian
echo -e 'mythicalVersion="'"`cat ./lastupdated`"'"'>>./librarian
while read line
do
test "$line" = "########################## USER JOBS############################" && let startwrite=$startwrite+1
if [ $startwrite = 2 ]; then
clear
parsing="$parsing""."
test "$parsing" = "Stand-by Parsing mythicalLibrarian......." && parsing="Stand-by Parsing mythicalLibrarian"
echo $parsing
echo -e "$line" >> ./librarian
fi
done <./mythicalLibrarian.sh
clear
echo "Parsing mythicalLibrarian completed!"
echo "Removing old and downloading new version of mythicalSetup..."
test -f ./mythicalSetup.sh && rm -f ./mythicalSetup.sh
curl "http://mythicallibrarian.googlecode.com/svn/trunk/mythicalSetup.sh">"./mythicalSetup.sh"
chmod +x "./mythicalSetup.sh"
./mythicalSetup.sh
exit 0
fi
编辑：没关系，我想您一直在说它正在无休止地下载
以Mbps为单位的带宽计算
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