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Why do I get:Warning: no access to tty?

April 26, 2017TTY warning

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Why do I get:Warning: no access to tty?

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Users whose login shell is tcsh should ignore the messages: Warning: no access to tty (Bad file descriptor). Thus no job control in this shell. This is a well known ‘feature’ of tcsh which occurs when a login tcsh is started in batch. The warning would be relatively easy to suppress (by modifying tcsh and recompiling) but the additional system maintenance is not considerd worthwhile.