'[root@serverX~]$ tar cjf /root/logbackup.tar.bz12 /var/log' What will this command do?

The command provided is using the tar utility, which is commonly used for creating archives in Linux. The specific flags in the command are crucial for understanding its functionality. The c flag indicates that the command is creating an archive, the j flag specifies that the archive should be compressed using bzip2, and the f flag allows you to specify the name of the archive file that will be created.

The output file specified is /root/logbackup.tar.bz12, and since bzip2 compression is indicated by the j flag, this command will create a bzip2-compressed archive of the contents of the directory /var/log. Thus, the correct answer reflects that the primary operation of this command is to compress the specified directory using bzip2, resulting in a more efficient storage format compared to uncompressed versions.

Knowing about the other options provides context: gzip is indicated by the z flag, which is not present in this command, and zip is a different compression format that is not managed by tar. Additionally, a non-compressed archive would not use the j flag, as this flag indicates compression. Therefore, the nature of the flags confirms that the command creates a b