compute/bash-gotchas.md
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@@ -2,9 +2,9 @@
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This kind of shit is why sysadmins drink.
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### (( )) can return false
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-[Iff](https://en.wikipedia.org/wiki/If_and_only_if) the expression in `(( blah ))` evaluates to 0, the `(( ))` returns false, so your `set -e` script will fall on its arse.
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+[Iff](https://en.wikipedia.org/wiki/If_and_only_if) the expression in `(( blah ))` evaluates to 0, the `(( ))` returns false, so your `set -e` script will fall on its arse. Best of luck to you.
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-### pipes into read can return false
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-In some old versions of bash (e.g. RHEL6), piping commands into `while read -r blah` will fail at the end of the stream, so `set -e` will make a mockery of you.
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+### pipes into read can return false for no reason
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+In some old versions of bash (e.g. RHEL6), piping commands into `while read -r blah` from the left will return false unchecked at the end of the stream, so `set -e` will make a mockery of you.
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-Use `while read -r blah; do something; done < <(command>)` instead.
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+Use `while read -r blah; do something; done < <(command>)` instead.