#Untar command linux archive#

It extracts the contents in the current working directory. no-same-ownerĮxtract files as yourself (default for ordinary users). To untar or extract a tar file, just use following tar command with the option x (extract). You should by default get same ownership as user running untar command when not root user. You can also use cpio to extract from tar as some user:group cpio -iR user:group -F file.tar If it gets run as root you can use sudo -u username or su username -c to run command as some other user, and you should get ownership as that user then. The command is as follows: tar -xvf file. If you are running untar as root then they get extracted with same uid:gid ownership that they were packed with by default, because root user can do chown to any user. This option is used to untar any file in our current directory or inside the specified directory with the -C option. When you extract tar files as non-root user you extract them with the user running the untar command by default, because regular user cannot do chown to other users. If you try to extract something from tar as regular user with -same-owner, in case it would try to extract files with ownership not same as user running untar command you will get 'Cannot change ownership to uid x, gid x: Operation not permitted'. Regular user wouldn't be able to change ownership of extracted files to root, that would be a huge security issue (you could put setuid and 777 on any file and then get root privileges that way, by changing file ownership to root).

#Untar command linux archive#

f backup.tgz : Read the archive from the specified file called backup.tgz. show progress and file names while extracting files. PATH is optional and used in the tar file is extracted differently than the current working path. The options used so far as follows: -z : Uncompress the resulting archive with gunzip command or gunzip command. If you get root ownership on untared files you are running it as root user. Untar Command Syntax OPTIONS is used to untar different compressions formats. If you run tar extract as non-root user it gets extracted as current user by default.