On Thu, 1 May 2008 14:47:54 +0100, Clint Adams <[EMAIL PROTECTED]> said:
> On Thu, May 01, 2008 at 02:33:04PM +0100, Stephane Chazelas wrote:
>> I don't really care about the "interactive" side of things ($ENV,
>> $PSx, job control), but I tend to consider that for the scripting
>> side of things, the optional features should be implemented. For
>> instance, if you don't have command -v, there's no other reliable way
>> to find out whether a command exists or not. So you have to have
>> something (either "command -v" or "type").
> If policy wants to mandate either "command -v" or "type", we could
> conceivably move toward dropping "which" from debianutils.
Well, type does not have a uniform implementation right now. And
very few as as scripting friendly as which (most require you to remove
junk from the output). Command -v also has mi9xed success.
,----[ Canonical which output ]
| __> /bin/which which
| /bin/which
`----
,----[ Bash, which is just plain wrong ]
| __> bash
| % type -p which
| /usr/X11R6/bin/which
| __> type which
| which is /usr/X11R6/bin/which
__> command -v which
/usr/X11R6/bin/which
`----
,----[ zsh, which does not match which's plain output nohow ]
| __> zsh
| __> type -p which
| which is /bin/which
| __> type which
| which is a shell builtin
| __> command -v which
| which
`----
,----[ ash, which again is more verbose than which ]
| __> ash
| $ type -p which
| -p: not found
| which is /bin/which
| $ command -v which
| /bin/which
`----
,----[ dash, just like ash ]
| __> dash
| $ type -p which
| -p: not found
| which is /bin/which
| $ command -v which
| /bin/which
----
,----[ posh, which does not implement type at all ]
| __> posh
| $ type -p which
| posh: type: not found
| $ command -v which
| command: invalid option -- v
`----
Given this, I am not sure policy can ratify either type, type
-p, or command -v as a drop in replacement.
manoj
--
Someone in DAYTON, Ohio is selling USED CARPETS to a SERBO-CROATIAN
Manoj Srivastava <[EMAIL PROTECTED]> <http://www.debian.org/~srivasta/>
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