2011/10/25 Chris Adams <cmadams@xxxxxxxxxx>: > Once upon a time, Michał Piotrowski <mkkp4x4@xxxxxxxxx> said: >> 2011/10/25 Chris Adams <cmadams@xxxxxxxxxx>: >> > Once upon a time, Michał Piotrowski <mkkp4x4@xxxxxxxxx> said: >> >> I created feature page >> >> https://fedoraproject.org/wiki/Features/F18MorePortableInterpreters >> > >> > I strongly object to this "feature". /bin/sh is a Unix standard back to >> > IIRC around 7th Edition, and there is NO good reason to break it. The >> > "#!/usr/bin/env foo" suggested replacement has always been a hack to >> > work around broken systems, not something suggested for all scripts. >> >> What is wrong with >> #!/usr/bin/env interpreter >> from technical POV? > > It is an unnecessary hack, since the intepreters all have standard > locations. It also adds the overhead of a second exec() call and a PATH > search (start env, let it parse its command line, then search the PATH > for the desired interpreter, then exec() the interpreter). Overhead is not big - about 0,00094s according to Richard's test. > > It also makes system scripts more fragile; for example, if somebody > installs (from source) a different version of python in /usr/local/bin, > all RPM-installed scripts in /usr/bin (that may not even work with that > version) will now use the new version with unpredictable results. Yes, this is a good argument. > > -- > Chris Adams <cmadams@xxxxxxxxxx> > Systems and Network Administrator - HiWAAY Internet Services > I don't speak for anybody but myself - that's enough trouble. > -- > devel mailing list > devel@xxxxxxxxxxxxxxxxxxxxxxx > https://admin.fedoraproject.org/mailman/listinfo/devel -- Best regards, Michal http://eventhorizon.pl/ -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
