![]() ![]() ![]() If you really want an actual tar utility on Windows, GNU tar is installable through WSL on Windows 10 or through Cygwin. Its name implies it's a zip utility, but it also works with tar archives, and even provides commands for the cmd command-line interface. tar files is to install the LGPL open source 7-Zip utility. On Linux, BSD, Illumos, and even Mac OS, the tar command is already installed for you. The tar format only creates a container for files, but the files can be compressed with separate utilities. zip file, but a tar archive is notably not compressed. People new to the tar format usually equate it to a. Its purpose is simple: It takes one or more files and "wraps" them into a self-contained file, called a tape archive because when tar was invented it was used to place data on storage tapes. tar file at some point. The open source tar archive utility has been around since 1979, so it is truly ubiquitous in the POSIX world. The destination tar reads the stream, opens files, writes data, closes files, and repeats, where those operations have very little latency.If you use open source software, chances are you'll encounter a. All of the synchronous operations happen on the destination server. It simply outputs a stream describing all of the file data and metadata without waiting for any response to any operation. tar on the source system does not expect any responses from the destination. The critical part is that while the TCP stream is bi-directional (the source sends data, the destination sends ACKs), the tar data is uni-directional. tar xf -) moves all of the latency to the remote system. Both rsync and scp will have a lot of synchronous operations when you're copying a directory to an empty remote directory. If a tool sends a command and waits for the reply, then bandwidth will be idle most of the time during that round-trip. In general, rsync is a very good tool (even when copying local folders, you shouldn't reject it for that.) However, it has the same problem as scp when the destination is empty. So far in this thread, there's only one comment that gets close to an accurate answer. Without the slash ( foo), the directory foo will be created at the destination, and its contents copied into it. Include a slash ( foo/) and only the contents of foo will be copied to the destination. Remove the -dry-run to actually copy things.Īlso note that for the source path a trailing slash is meaningfull. The syntax I usually recommend is: rsync -aPh -dry-run /path/to/source will simply display on the screen what rsync would copy. Seriously, go spend a few hours learning how to use it. You've obviously never learned to use rsync, and you are missing out. It's bloody ubiquitous-included in every linux distribution, and even in MacOS. It isn't a “side-tool” (whatever that means). But rsync is hardly obscure, and I'm willing to bet that no one has spent the time to optimize scp -r because tools like rsync and sftp already exist. ![]() I'm sorry that you're put out by discovering that your clever work-around is, in fact, the hard way to do things. I usually use rsync to write files to a USB flash drive or SD card. It's quite common to use rsync in place of cp, especially when you want to copy an entire directory tree. ![]()
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