在下面的位置后卷取远程文件名

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If you have a recent version of curl (7.21.2 or later), see @jmanning2k's answer.

I you have an older version of curl (like 7.19.7 which came with Snow Leopard), do two requests: a HEAD to get the file name from response header, then a GET:

url="http://www.vim.org/scripts/download_script.php?src_id=10872"
filename=$(curl -sI  $url | grep -o -E 'filename=.*$' | sed -e 's/filename=//')
curl -o $filename -L $url

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最佳答案

The remote side sends the filename using the Content-Disposition header.

curl 7.21.2 or newer does this automatically if you specify --remote-header-name / -J.

curl -O -J -L $url

The expanded version of the arguments would be:

curl --remote-name --remote-header-name --location $url

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I wanted to comment to jmanning2k's answer but as a new user I can't, so I tried to edit his post which is allowed but the edit was rejected saying it was supposed to be a comment. sigh

Anyway, see this as a comment to his answer thanks.

This seems to only work if the header looks like filename=pythoncomplete.vim as in the example, but some sites send a header that looks like filename*=UTF-8' 'filename.zip' that one isn't recognized by curl 7.28.0

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Please note that certain malconfigured webservers will serve the name using "Filename" as key, where RFC2183 specifies it should be "filename". curl only handles the latter case.

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I wanted a solution that worked on both older and newer Macs, and the legacy code David provided for Snow Leopard did not behave well under Mavericks. Here's a function I created based on David's code:

function getUriFilename() {
header="$(curl -sI "$1" | tr -d '\r')"


filename="$(echo "$header" | grep -o -E 'filename=.*$')"
if [[ -n "$filename" ]]; then
echo "${filename#filename=}"
return
fi


filename="$(echo "$header" | grep -o -E 'Location:.*$')"
if [[ -n "$filename" ]]; then
basename "${filename#Location\:}"
return
fi


return 1
}

With this defined, you can run:

url="http://www.vim.org/scripts/download_script.php?src_id=10872"
filename="$(getUriFilename $url)"
curl -L $url -o "$filename"

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An example using the answer above for Apache Archiva artifact repository to pull latest version. The curl returns the Location line and the filename is at the end of the line. Need to remove the CR at end of file name.

url="http://archiva:8080/restServices/archivaServices/searchService/artifact?g=com.imgur.backup&a=snapshot-s3-util&v=LATEST"
filename=$(curl --silent -sI -u user:password $url | grep Location | awk -F\/ '{print $NF}' | sed 's/\r$//')
curl --silent -o $filename -L -u user:password $url

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If you can use wget instead of curl:

wget --content-disposition $url

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I had the same Problem like John Cooper. I got no filename but a Location File name back. His answer also worked but are 2 commands. This oneliner worked for me....

url="https://download.mozilla.org/?product=firefox-latest-ssl&os=linux64&lang=de";url=$(curl -L --head -w '%{url_effective}' $url 2>/dev/null | tail -n1) ; curl -O $url

Stolen and added some stuff from https://unix.stackexchange.com/questions/126252/resolve-filename-from-a-remote-url-without-downloading-a-file

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Using the solution proposed above, I wrote this helper function curl2file.

[UPDATED]

function curl2file() {
url=$1
url=$(curl -o /dev/null -L --head -w '%{url_effective}' $url 2>/dev/null | tail -n1) ; curl -O $url
}

Usage:

curl2file https://cloud.tsinghua.edu.cn/f/4666d28af98a4e63afb5/?dl=1

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instead of applying grep and other Unix-Fu operations, curl ships with a builtin "Write Out" option variable^[1] specifically for such a case, e.g.

$ curl -OJsL "http://www.vim.org/scripts/download_script.php?src_id=10872" -w "%{filename_effective}"
pythoncomplete.vim

^{[1]_{https://everything.curl.dev/usingcurl/verbose/writeout#available-write-out-variables}}