FLEX (operating system)
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What links here
Echo (command)
Unexpand
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GNU Core Utilities
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List of GNU packages
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At sign
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BusyBox
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Redirection (computing)
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Xargs
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V (operating system)
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ReactOS
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HP Multi-Programming Executive
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Command (computing)
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Douglas McIlroy
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TRIPOS
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OS-9
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Single UNIX Specification
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POSIX
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OS/2
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Multics
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