On 2026-04-16 06:21:17 +0200, Harald Dunkel wrote: > gate5b# x=$(rcctl ls failed) || rcctl restart $x > smtpd(ok) > gate5b# rcctl ls failed > gate5b# echo $? > 0 > > This is confusing. Imagine grep would exit 1 if it has found > something.
grep uses inverse logic (positive match) to `rcctl ls failed` (negative match) so may not be the best analogy. One may want to do something like rcctl ls failed || mail ... to notify from a script but only when there is something to do, that is, when there is a failed service and therefore a non-zero exit status word to indicate that.
