====  Remove spaces from files in a directory recursively ====

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Source: https://stackoverflow.com/questions/2709458/how-to-replace-spaces-in-file-names-using-a-bash-script

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Install the package
<code bash>apt-get install rename</code>

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Rename the dirs first, then the files
<code bash>
find -name "* *" -type d | rename 's/ /_/g'
find -name "* *" -type f | rename 's/ /_/g'
</code>