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lang-bash
> output.txtwhy not try something along the lines ofecho Start > output.txt. Hopefully,grepwon't think it's a binary file.tee -a. See there for details (tee -ais the equivalent of shells using>>).| tee) will refill it with zeros and the write will occur at the previous offset.greptreats an occurrence of 0 within the first buffer read (32kiB) as a binary file by default.