EBITS is for error filehandles.

No. What does that even mean? It's used to specify the handles to monitor for exceptional conditions. See my answer for details.

In reply to Re^2: select RBITS,WBITS,EBITS,TIMEOUT. The meaning of all the *BITS by ikegami
in thread select RBITS,WBITS,EBITS,TIMEOUT. The meaning of all the *BITS by igoryonya

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