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The UNIX and Linux Forums - Free Tech Support
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SS64 | Command line reference
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All commands
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Windows Command Line Interpreter|Shell|DOS Prompt|Batch Files|Scripting
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Amazon S3 Tools: Command Line S3 Client and S3 Backup for Windows, Linux: s3cmd, s3express
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Informatica, Oracle, Netezza, Unix, Hadoop Tutorials and Examples
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The UNIX School