Use native command-line tools for common tasks related to text preprocessing, like stripping bad characters, normalizing whitespace/newlines, replacing regular expressions, text normalization, etc. They're very fast and work surprisingly well.
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Set default permissions for all files/directories created by a user on Linux using umask. Additionally, use Access Control Lists (ACLs) for all files and directories created under a given directory too.
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Common operations you may first yourself doing over and over again when dealing with PostgreSQL databases. Unless otherwise stated, examples assume version 9 or later, running on Ubuntu.
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