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<programming, operating system> One of the variables accessible to a Unix shell process, including environment variables (e.g. $HOME), command line arguments (e.g. $1) and local variables (e.g. $input_file). Other operating systems have similar variables.
(1999-01-26)
Nearby terms: shell « shell out « shell script « shell variable » shielded twisted pair » SHIFT » Shift In
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