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Commands tagged sparse files

Commands tagged sparse files from sorted by
Terminal - Commands tagged sparse files - 2 results
cp --sparse=always <SRC> <DST>
2011-09-07 08:02:50
User: h3xx
Functions: cp
Tags: cp sparse files sparse
3
Up
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Copy sparse files

This causes cp to detect and omit large blocks of nulls. Sparse files are useful for implying a lot of disk space without actually having to write it all out.

http://en.wikipedia.org/wiki/Sparse_file

You can use it in a pipe too:

dd if=/dev/zero bs=1M count=5 |cp --sparse=always /dev/stdin SPARSE_FILE
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find -type f -printf "%S\t%p\n" 2>/dev/null | gawk '{if ($1 < 1.0) print $1 $2}'
2011-07-02 19:22:49
User: thetrivialstuff
Functions: find gawk
Tags: find sparse files sparse
0
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find sparse files

Prints the path/filename and sparseness of any sparse files (files that use less actual space than their total size because the filesystem treats large blocks of 00 bytes efficiently).

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