Marco d'Itri wrote: > Andreas Metzler wrote: > > Thomas Hood wrote: > > > Is there anything else which dash supports but posh does not? > > command -v > > Which is the well known which(1) replacement, and basically mandatory > in a sane Debian shell. I keep wondering why people bother with posh.
"command -v" is optional under POSIX. Furthermore It behaves differently in different shells. $ bash $ command -v foo bash: command: foo: not found $ echo $? 1 $ dash $ command -v foo $ echo $? 127 $ posh $ command -v foo command: invalid option -- v $ (Some would argue that this violates 10.1, or should do.) It is not even useful as a which(1) replacement. Whereas "which" prints the pathname of the first executable file on the PATH, "command -v" prints the pathname of the first executable file on the PATH _or_ the pathname of the first non-executable file on the PATH. In any case, there is no need to substitute anything for "which". For these reasons the use of "command -v" should be avoided in /bin/sh scripts and I would say that posh is right to omit it. -- Thomas Hood -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
