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Solaris
detect if file is bzip compressed on solaris 10
Post 302557827 by olam on Thursday 22nd of September 2011 07:52:22 AM
09-22-2011
detect if file is bzip compressed on solaris 10
Hi, I recently tried to create a tar archive on a Solaris 10 machine with gnu tar 1.17 and I used the command gtar -cjf filename.tar file1 file2 directory.
The creation was successful but I'm not sure if the file was compressed with bzip as the j option is supposed to do. How can I check that it was compressed?
I have tried the command gtar -tf filename.tar and it lists all files but it doesn't say anything about compression (I left out the j option on purpose to see if gtar would protest)
When I created the archive I thought that the j option would add the .bz2 extension to the file name but it didn't so now I'm confused...
---------- Post updated at 01:52 PM ---------- Previous update was at 01:45 PM ----------
Hmm, found the solution myself...
I ran bunzip2 filename.tar and it didn't protest about file format (it warned about not being able to guess original file name).
Then I tried bunzip2 somefile.txt and got the message
bunzip2: somefile.txt is not a bzip2 file.
Conclusion: my tar archive was compressed but the file name didn't reflect this and gtar can read a compressed archive even though I don't specify how it is compressed.
The creation was successful but I'm not sure if the file was compressed with bzip as the j option is supposed to do. How can I check that it was compressed?
I have tried the command gtar -tf filename.tar and it lists all files but it doesn't say anything about compression (I left out the j option on purpose to see if gtar would protest)
When I created the archive I thought that the j option would add the .bz2 extension to the file name but it didn't so now I'm confused...
---------- Post updated at 01:52 PM ---------- Previous update was at 01:45 PM ----------
Hmm, found the solution myself...
I ran bunzip2 filename.tar and it didn't protest about file format (it warned about not being able to guess original file name).
Then I tried bunzip2 somefile.txt and got the message
bunzip2: somefile.txt is not a bzip2 file.
Conclusion: my tar archive was compressed but the file name didn't reflect this and gtar can read a compressed archive even though I don't specify how it is compressed.
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