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I downloaded the SageMath jessie package here but I cannot open it. I get the warning in ArchiveManager

Could not open this file type
There is no command installed for Tar archive (lrzip-compressed) files.
Do you want to search for a command to open this file?

so I click search the missing lrzip-compressed thing but I get

enter image description here

Following @SamuelLelièvre's answer by two ways

Installing lrzip in Debian 8.1 and trying to open the package with Archive Manager gives

enter image description here

where you see that the error message changed after installing the command, which is strange. Doing then again lrunzip Debian_GNU_Linux_8_jessie_sage-6.8-x86_64-Linux.tar.lrz gives 

> Output filename is:
> Debian_GNU_Linux_8_jessie_sage-6.8-x86_64-Linux.tar Decompressing...
> 100%    5625.85 /   5625.85 MB Average DeCompression Speed: 42.939MB/s
> Output filename is:
> Debian_GNU_Linux_8_jessie_sage-6.8-x86_64-Linux.tar: [OK] - 5899130880
> bytes                                 Total time: 00:02:10.73

which you can then open by the ArchiveManager getting sage-6.8-x86_64-Linux -directory as the output.

How can you open such a file .tar.lrz?

Léo Léopold Hertz 준영
  • 5,924

2 Answers2

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You could do

$ lrunzip Debian_GNU_Linux_8_jessie_sage-6.8-x86_64-Linux.tar.lrz

for which you might have to install lrzip first, by doing

$ sudo apt-get install lrzip

After running lrunzip as above, you get a .tar archive, which you still need to untar to a directory, for example by running

$ tar xvf Debian_GNU_Linux_8_jessie_sage-6.8-x86_64-Linux.tar

(or by letting Debian's Archive Manager untar it).

This will produce a directory Debian_GNU_Linux_8_jessie_sage-6.8-x86_64-Linux which contains the sage executable.

Samuel Lelièvre
  • 157
1

install lrzip as described already

sudo apt-get install lrzip

then you can use the inbuilt lrzip decompression and untarring wrapper:

lrzuntar Debian_GNU_Linux_8_jessie_sage-6.8-x86_64-Linux.tar.lrz

which will extract the files in the tar file into a directory called Debian_GNU_Linux_8_jessie_sage-6.8-x86_64-Linux

Con Kolivas
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