Path: utzoo!attcan!uunet!iscuva!ricks From: ricks@iscuva.ISCS.COM (Rick Schaeffer) Newsgroups: comp.sys.amiga Subject: Re: Yea, but can an Amiga Shell do this.... Message-ID: <1877@iscuva.ISCS.COM> Date: 18 Aug 88 03:58:55 GMT References: <1836.AA1836@heimat> <3782@hcr.UUCP> Organization: ISC Systems Corporation, Spokane, WA Lines: 45 In article <3782@hcr.UUCP> edwin@hcrvax.UUCP (Edwin Hoogerbeets) writes: > >Amigans, rejoice! > >There is a version of Matt's csh on Fish 145 that does this. It was >modified by Johan Widen from the 2.07 original to have this backtick >argument execution and to have file name completion. (yeah!!). It requires >ARP 1.1 to run. > >I'm just waiting for the << operator. It is the only obstacle left >against unsharing real Unix shars on the Amiga. (Amiga sed is >on Fish 128 and wc is on Fish 69... anything else needed?) > I like CSH a *lot*! It does have a few problems that need fixing before it is really capable of unsharing real Unix shar files. For instance, there needs to be some way for a child process of CSH to access CSH's environment. Most importantly, a shell spawned by CSH should inherit it's parents environment. For instance, I have been recently been working on a port of RCS (Revision Control System) to the Amiga using Manx C. It doesn't have a proper Unix compatible "system" function but does have fexecv. I first tried implementing a system function of my own which parsed up the string argument into an argv array that fexecv would take. That sort of worked... except that it didn't handle redirection (and in particular output append!). Well...csh handles all that stuff so I implemented my system function to invoke "csh -c" followed by the rest of the arguments. That sort of worked...except that csh has a default _path variable set up which doesn't include *any* of the things I have in my normal path! So I modified csh to go into Amigados and construct it's _path variable using Amigados's path and added a new internal command named "path" which sets both csh's path variable and Amigados's path. Things are now working fine...BUT things would sure have been easier if a child spawned by csh inherited a copy of it's environment!! Steve and/or Matt ... while adding real pipes and all those other goodies I'm sure you are working onyou might give some thought to adding some way for a child process to inherit csh's environment! If there is any interest, I will post the diffs for my rather trivial path mods. -- Rick Schaeffer UUCP: uunet!iscuva!ricks ISC Systems Corp. ricks@iscuva.ISCS.COM Box TAF-C8 Phone: (509)927-5114 Spokane, WA 99220