For ksh93 the correct behaviour is what POSIX/SUS defines in this case. Don, do you know if POSIX/SUS covers this case?
Olga On Tue, Apr 6, 2010 at 9:46 AM, Michal Hlavinka <[email protected]> wrote: > Hi, > > we're still getting complains about inconsistent behavior with unset PATH > variable, so we'll have to fix it one way or the other. We'd like to know what > behavior did you intend and what is correct so we won't differ in the future. > > After 'unset PATH' only executables that are specified with full path works, > but man page mentions also executables in current directory should work: > > """The default path is /bin:/usr/bin: (specifying /bin, /usr/bin, and the > current directory in that order).""" > > We've found BASH has this behavior (current directory is used for default path > after PATH is unset), but pdksh, mksh, zsh, csh does not work (only > executables with full path specified work). > > What behavior is correct for ksh? > > Thanks > Michal Hlavinka > > > > On Friday 05 March 2010 10:01:01 Tomáš Smetana wrote: >> Hello, >> the manual page for ksh says in the "Execution" section that "The >> default path is /bin:/usr/bin: (specifying /bin, /usr/bin, and the current >> directory in that order).". I don't think this is (always) correct -- at >> least on my i386 Linux machine: >> >> $ pwd >> /home/tsmetana >> $ touch foo.ksh >> $ chmod +x foo.ksh >> $ export PATH=/bin:/usr/bin: >> $ foo.ksh >> $ unset PATH >> $ foo.ksh >> ksh: foo.ksh: not found [No such file or directory] >> >> As you can see, when I explicitly set the PATH to what is supposed to be >> the default it searches the current directory. However the (real) default >> path seems to search only /bin and /usr/bin. >> >> The default search path seems to be configurable at the compile time and >> there is some inconsistency between the defaults in >> lib/libast/comp/conf.tab and cmd/ksh93/data/msg.c e_defpath[] constant >> which looks to be used in the case the ast configuration PATH value is not >> found. >> >> I believe that not having . in the default path is a more reasonable >> setting so I would like to ask you to fix the manual page and eventually >> change the fallback value too. Also it seems that this is not yet >> documented difference between ksh88 and ksh93. >> >> Thank you and regards. > > _______________________________________________ > ast-developers mailing list > [email protected] > https://mailman.research.att.com/mailman/listinfo/ast-developers > -- , _ _ , { \/`o;====- Olga Kryzhanovska -====;o`\/ } .----'-/`-/ [email protected] \-`\-'----. `'-..-| / Solaris/BSD//C/C++ programmer \ |-..-'` /\/\ /\/\ `--` `--` _______________________________________________ ast-developers mailing list [email protected] https://mailman.research.att.com/mailman/listinfo/ast-developers
