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Re: Shell Command Substitution and fork()
> so why don't you use PDKSH (/bin/ksh) or pkgsrc's ast-ksh instead of ash
> (/bin/sh) ? Even pkgsrc's GNU Bash would do.
pdksh performs worse that ash. bash surely performs worse. Both fork.
Overall, I don't write for a specific shell, I write for POSIX shells.
While that particular script (part of a much lager system) performs best
with ksh93, other parts may perform best with another shell. I won't switch
shells from component to component.
> I do x=`command` which is almost the same as $(command), using any KSH or
> BASH as interpreter.
Backticks are POSIX, too. A shell that will fork with $(...) will certainly
fork with `...`, too.
> I don't really care about POSIX here as KSH and BASH syntax is much more
It's fine if you don't care about POSIX.
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