#2646: scripts should use printf instead of echo
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Reporter: tito_puentes | Owner: lfs-b...@…
Type: defect | Status: closed
Priority: low | Milestone: 6.7
Component: Bootscripts | Version: SVN
Severity: minor | Resolution: wontfix
Keywords: echo printf POSIX |
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Changes (by d...@…):
* status: new => closed
* resolution: => wontfix
Comment:
Replying to [comment:7 bon]:
> > AFAICT, the stty sane bit can go, so we could put a lighter weight
test case in each bootscript and source functions at each runlevel change
to eliminate that
> <snip>
>
> are you saying you're going to source them once per runlevel?
>
> then you'd have to export the functions, and export -f is a bashism
>
> not to mention that exporting that many vars to begin with is bound to
cause conflicts
You are correct, we cannot do the above and continue to use /bin/sh for
the schebang. At any rate, as pointed out previously, the suggestion to
use printf still does not account for all cases.
While I agree that printf could be both cleaner and simplify the scripts a
bit, while also making the assumption that printf is consistent across all
implementations, I have to agree with the others and close as wontfix as
there is currently no portability issue.
When comparing apples to apples, we are discussing an estimated 3 second
time deduction on even the oldest supported hardware (i486 running at
33MHz) in exchange for several hours worth of work (when you include the
time required to test). The amount of work required is just far too much
for such a minimal gain on scripts that I personally hope to see removed
in the near future. Going forward, however, printf will be preferable for
scripts using /bin/sh.
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Ticket URL: <http://wiki.linuxfromscratch.org/lfs/ticket/2646#comment:10>
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