Messages in this thread | | | Date | Sun, 21 Mar 1999 16:42:23 +0100 (CET) | From | <> | Subject | Re: #!perl - alternative path to script interpreters - patch to 2.2 |
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> Under different OS you will not have your hack in the kernel, so > your solution has *less* chances to work there (zero, to be precise).
But script written under different OS will work under linux without change.
> > It is more elegant to treat word after #! as a name of language... > It is *completely* non-portable. Moreover, it will be useless for > situations when different names are used for different versions of > aforementioned awk (gawk vs. mawk). If you have permissions to tweak > sysctls (aka /proc/sys) you have permissions to create a symlink.
Script may specify /opt/new-language/bin/sth while your comp may not have /opt directory tree at all - its ugly. This patch provides centralized way to redirect interpreter execution. It takes about 300 bytes (code overhead is smaller).
> > This patch also fixes problems with scripts that come from DOS environment > > ('\r\n' as line delimiter). > Erm??? That is, instead of tr -d "\015" in userland where it..
OK. But you have to change script. More: you have to know nature of a problem (to remove '\r') - kernel will not tell you what is going wrong.
I know that functionality provided by this patch is limited, but it is also very small.
JB
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