gtar cpf - . | (cd /dest/directory; gtar xpf -)

Copy data using gtar

It copies the entire current working directory to the destination directory with compression enabled.

1
By: mnikhil
2009-05-15 13:23:00

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  • This command will copy a folder tree (keeping the parent folders) through ssh. It will: - compress the data - stream the compressed data through ssh - decompress the data on the local folder This command will take no additional space on the host machine (no need to create compressed tar files, transfer it and then delete it on the host). There is some situations (like mirroring a remote machine) where you simply cant wait for a huge time taking scp command or cant compress the data to a tarball on the host because of file system space limitation, so this command can do the job quite well. This command performs very well mainly when a lot of data is involved in the process. If you copying a low amount of data, use scp instead (easier to type) Show Sample Output


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    polaco · 2009-11-10 20:06:47 4
  • "Copying" things to the X clipboard doesn't normally create a copy. Rather the data to be 'copied' is referenced. This means that if the application that you 'copied' stuff from is closed, that data is lost. If the application that you 'copied' from is suspended with CTRL-Z, there could be some issues if you try to paste it into something. This command will create a copy of referenced data and have xclip be the provider of it, so you can then go ahead and close the app that contains the original information. Caveat: I'm not sure if this is binary-safe (though i would expect it to be), and don't know what would happen if you used it to clip a 20 meg gimp image. This technique becomes more convenient if you set it up as an action in a clipboard manager (eg klipper, parcellite). Some of these applets can take automatic action based on a variety of parameters, so you could probably just get it to always own the clipped data whenever data is clipped.


    4
    xclip -o -selection clipboard | xclip -selection clipboard
    intuited · 2009-12-21 19:02:43 1
  • helpful when you see something like this: zsh: argument list too long: cp


    0
    for file in ./data/message-snapshots/*.jpg; do cp "$file" /data/digitalcandy/ml/images/; done
    ferdous · 2014-06-14 17:26:21 0
  • Sometimes you might need to have two copies of data that is in tar. You might unpack, and then copy, but if IO is slow, you might lower it by automatically writing it twice (or more times)


    -1
    mkdir copy{1,2}; gzip -dc file.tar.gz | tee >( tar x -C copy1/ ) | tar x -C copy2/
    depesz · 2011-04-14 17:02:05 0
  • Say you have a directory structure like "foo/, foo/data/, bar/, bar/data/". If you just want to ignore 'bar/data' and you use "ack --ignore-dir=data pattern" it will ignore both foo/data and bar/data and 'ignore-data=bar/data' etc won't work.


    0
    ack -a -G '^(?!.*bar/data.*).*$' pattern
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  • pv allows a user to see the progress of data through a pipeline, by giving information such as time elapsed, percentage completed (with progress bar), current throughput rate, total data transferred, and ETA. (man pv) Show Sample Output


    55
    pv sourcefile > destfile
    edo · 2010-03-20 20:55:18 2

What Others Think

what's the point of this if it is all on the same machine? Does making the writing and reading sides asynchronous have a benefit?
bwoodacre · 469 weeks and 6 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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