'How can i extract compressed .cmpr file ? (application/x-compress) [closed]

Been trying so hard, searched the entire internet, barely even found some reference to this kind of compression;

I have a compressed file on ubuntu, with extention ".cmpr", i need to extract it, and nothing had worked for me so far, tried unzip, bunzip2 and gunzip, and tar -xv; and also tried everything with $(file -i archive.cmpr) - the file name is "archive.cmpr, which gives "application/x-compress" as mime type.

Can someone please help me found out how to extract this ? (without external software if possible)

edit: adding file content in hexadecimal:

"

00000000 1f 9d 90 54 d0 a4 99 03 c2 4c 1a 36 65 40 dc 09 |...T.....L.6e@..| 00000010 43 70 cc 9b 36 70 e4 94 99 33 a7 0c 19 05 |Cp..6p...3....| 0000001e

"

(i used hd command for this)

linuxcompressiontargunzip


Solution 1:[1]

This is using simple LZW compression, which was the most widely used compression algorithm on Unix and Unix-like systems prior to gzip. You should be able to uncompress it using the old uncompress program from the ncompress package, which has been around since the 1980s, or using gunzip since it also includes support for this older format. However the normal file extension is .Z; it won't recognize .cmpr. You can either rename the file or use a command like gunzip <archive.cmpr >archive.out.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 mark4o

Related Questions