With xz we will typically get a better compression ratio. Having that security is something we all need.Xz is another general purpose data compression tool with syntax similar to the older and more popular gzip and bzip2 options. It’s always safer to make a backup of a file or directory before making changes, in case you need to revert to the original setup. As a system administrator, I created plenty of backups and recovered from some of them, too. Tar is useful in several different cases. If tar is not installed, you can do so depending on your operating system.
EXAMPLES OF TAR COMPRESS ARCHIVE
It allows you to create the archive and manage it easily with the available tools in your terminal. Tar has a lot of things you can do with it. #zcat | grep Įgrep is a great one to use just for regular file types. This shows the content of the archive, then pipes that output to a grep. In this example, we use pipes and greps to locate content. v - Verbose output Use pipes and greps to locate content To test the tar file content's integrity: #gunzip -c | tar t > /dev/null To test the gzip file is not corrupt: #gunzip -t In this example, we check the integrity of an existing tar archive.
EXAMPLES OF TAR COMPRESS HOW TO
How to check the integrity of a tar.gz backup We are making 200MB backups from the /dir folder. In this example, the dir/ is the directory that you want to split the backup content from. # tar cvf - /dir | split -bytes=200MB - backup.tar You can pipe the tar command into the split command. In this example, we split the existing backup into smaller archived files. f - Name the file How to split a backup into smaller backups This allows you to add additional files to the pre-existing backup backup.tar.
In this example, we add onto a backup backup.tar. f - Name the archive How to append or add files to a backup This is helpful in situations where you are trying to locate something but do not want to specify the name or want to add in all options matching that particular search.
Wildcards allow you to select files without having a specific search for keywords. In this example, we use the wildcard option on a backup backup.tar. z - compressed gzip archive file How to use the wildcard option In this example, we list the contents from a gzip backup without extracting it. z - compressed gzip archive file How to list contents of a tar(.gz) backup In this example, we extract content from a gzip backup, specifically a file called file.txt from the directory /backup/directory in the gzip file. # tar -exclude file.txt -exclude file.sh -cvzf How to extract content from a tar (.gz) backup In this example, we create a gzip backup called, but exclude the files named file.txt and file.sh by using the -exclude option. z - Compressed gzip archive file How to exclude files when creating a tar backup In this example, we create a gzip archive backup called of the directory /home/user. f - Name the archive How to create a tar.gz backup
In this example, we create a backup called backup.tar of the directory /home/user. Also, the tarball is easily movable from one server to the next. This command is one of the most widely-used commands for this purpose. It compresses files and directories into an archive file, known as a tarball.
Tar stands for tape archive and allows you to create backups using: tar, gzip, and bzip. The tar utility has a ton of options and available usage. It’s a common practice to complete and sometimes makes a difference in your finished work. In my personal experience, it has saved me more times than I can count. One of the key rules for working as a system administrator is always to make a backup.
EXAMPLES OF TAR COMPRESS DOWNLOAD
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