Re: shebang
On Fri, 4 Apr 2014, Ansgar Burchardt wrote:
> I'm interested where POSIX says what you are sure it says (that the
> shell is responsible for evaluating #!).
I said the shell is supposed to, and suggested to search POSIX, but
I wasn’t sure that it was POSIX standardised, and never said so. As
you cited, it’s probably not. Doesn’t mean the shell doesn’t or
shouldn’t.
> > Also, “man mksh” look for EXECSHELL (which is the interpreter the
> > shell uses if the script doesn’t even have a shebang).
>
> I don't think the manual for a not commonly used shell is a good
> reference...
Uhm, excuse me?
“Larry Page: 1.5 million Android devices activated every day”
“Android device activations set to hit 1 billion soon”
‣ http://www.androidcentral.com/larry-page-15-million-android-devices-activated-every-day
That was on 2013-07-18; by that time, every new device activation
meant one new mksh user.
“Google announced that in Q3 2011, the total number of Android
activations had surpassed 190 million, which was a significant increase
from 135 million the previous quarter. The increase was boosted by sales
of Android smartphones at lower prices from Chinese and Indian
manufacturers.[2] As of 3 September 2013, there have been 1 billion
Android devices activated.[3]”
‣ https://en.wikipedia.org/wiki/Comparison_of_Android_devices
Every 4.x device, and many others, run mksh as system shell
(/system/bin/sh, Android’s equivalent of our /bin/sh).
According to the graphics at
https://en.wikipedia.org/wiki/File:Android_historical_version_distribution_-_vector.svg
that’s over ¾ of all devices (although the graphics is unclear as to
whether that is the total number of all activations, or (as seems to
be common with statistics from Google) the number of currently “live”
devices). Add to that the amount of devices running AOSP or another
non-phone-home firmware (Replicant, maybe SiMKo3, Cyanogen… well it
does phone home…).
There are also hundreds of Debian (or derivates) systems running
with mksh as /bin/sh (I should know, I set up a good part of them).
All FreeWRT, MidnightBSD, MirBSD, and recent OpenADK systems run
with mksh as system shell (/bin/sh); sta.li will do that too.
There’s also a lot of systems that c̲a̲n̲ run with mksh as system shell
at the administrator’s choice. Debian, all BSDs (NetBSD® only from
version 1.6 onwards, 1.5 has ashisms in the init scripts), Crux,
FreeMiNT, Deli Linux, etc. at least.
And only then add the sheer amount of systems where mksh is used
but not as system shell…
I honestly doubt that any other Unix shell is currently used as
widespread as mksh.
bye,
//mirabilos
--
«MyISAM tables -will- get corrupted eventually. This is a fact of life. »
“mysql is about as much database as ms access” – “MSSQL at least descends
from a database” “it's a rebranded SyBase” “MySQL however was born from a
flatfile and went downhill from there” – “at least jetDB doesn’t claim to
be a database” ‣‣‣ Please, http://deb.li/mysql and MariaDB, finally die!
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