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lang-bash
s1=$(sha256sum "$x" > "$x.sha256")should besha256sum "$x" > "$x.sha256"sha256sumon"$x"regardless of if the check fails so it looks like it should update the.sha256file after giving the warning. The command substitution ins1=$(sha256sum "$x" > "$x.sha256")is a bit useless, though, as you're redirecting the output ofsha256sumto a file, there's no output for the shell to catch. It shouldn't affect what the program does, however. Also, it doesn't look like you're usings1. If you are, and want to get the output ofsha256sumto a file and to a shell variable, then use something likes1=$(sha256sum "$x" | tee "$x.sha256")