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ev56o
Apprentice
Joined: 26 Jan 2010
Posts: 180
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 Posted: Wed Dec 03, 2014 11:00 am Post subject: get the length of a remote file |
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i need to know the length (in byte) of a remote file before download.
i need a command similar:
| Code: |
$ command http://bla.com/file.rar
14340 <-------the length of the file
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this program must be faster and light than wget.
thanks. |
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khayyam
Watchman
Joined: 07 Jun 2012
Posts: 6228
Location: Room 101
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| Posted: Wed Dec 03, 2014 11:18 am Post subject: Re: get the length of a remote file |
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| ev56o wrote: | | i need to know the length (in byte) of a remote file before download. [...] this program must be faster and light than wget. |
ev56o ... you mean "faster" than actually downloading the file with wget? I assume so, you can use '--spider' and grab the "Length" string like so:
| Code: | # wget --spider http://mirror.netcologne.de/gentoo/distfiles/layman-2.0.0.tar.gz 2>&1 | awk '/^Length/{print $2}'
81184 |
best ... khay |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 5591
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| Posted: Wed Dec 03, 2014 4:34 pm Post subject: |
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Alternatively:
| Code: | $ curl -I http://mirror.netcologne.de/gentoo/distfiles/layman-2.0.0.tar.gz | pcregrep -o '(?<=Content-Length: )\d+'
81184 |
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