brandon@tdi2.UUCP (02/25/87)
Expires: Quoted from <4560@brl-adm.ARPA> ["Make is Buggy"], by rbj@icst-cmr.arpa (Root Boy Jim)... +--------------- | ]>Furthermore, it is a botch to *import* SHELL from the environment; | ]>this causes Makefiles to work differently for people with different | ]>login shells! "make" should NOT import SHELL. +--------------- AMEN! Plexus ships a buggy csh with System V; I use it. Mix it with make and KABOOM! I'm not happy with make. +--------------- | ]And it *certainly* should not attempt to import things like IFS! | | Well, John Mashey once suggested asking `why' before flaming, and since | someone brought it up, *** why does IFS even exist *** ? +--------------- It's a kludgy way to do things that can be done in other ways (albeit more slowly). Example: IFS=': ' # newline and colon while read name pass uid gid comment home shell; do # do something with them done < /etc/passwd This is the ONLY way I've seen it used; frankly, I use "awk" if I want to process a file in this way anyway, so I see no real use for IFS. ++Brandon -- ``for is he not of the Children of Luthien? Never shall that line fail, though the years may lengthen beyond count.'' --J. R. R. Tolkien Brandon S. Allbery UUCP: cbatt!cwruecmp!ncoast!tdi2!brandon Tridelta Industries, Inc. CSNET: ncoast!allbery@Case 7350 Corporate Blvd. INTERNET: ncoast!allbery%Case.CSNET@relay.CS.NET Mentor, Ohio 44060 PHONE: +1 216 255 1080 (home) +1 216 974 9210
jty@intrin.UUCP (03/03/87)
In article <140@tdi2.UUCP> brandon@tdi2.UUCP (Brandon Allbery) writes: >IFS=': >' # newline and colon >while read name pass uid gid comment home shell; do > # do something with them >done < /etc/passwd > >This is the ONLY way I've seen it used; frankly, I use "awk" if I want to >process a file in this way anyway, so I see no real use for IFS. Nope! IFS comes in handy if you want to parse command output or, say, PATH ---------- : 'this is a functional equivalent to SV sh type command' IFS=":$IFS" for CMD do for DIR in $PATH do if test -x $DIR/$CMD then echo $DIR/$CMD fi done done ----------- IFS=":$IFS" set `date` echo It\'s $4.$5 -- Jyrki Yli-Nokari, Intrinsic Oy, SF-33100 Tampere, FINLAND USENET: INTERNET: BITNET: FUNET: TELEPHONE: intrin!jty jty@tut.FI YLI at FINTUTA TTKKLK::YLI +358 31 132800
rbj@icst-cmr.arpa (Root Boy Jim) (03/10/87)
* We already went through the discussion of what @ is called. It's a `circlethorp', right? :-) Wilson H. Bent, Jr. ... ihnp4!hoh-1!whb AT&T - Bell Laboratories (201) 949-1277 Disclaimer: My company has not authorized me to issue a disclaimer. (Root Boy) Jim "Just Say Yes" Cottrell <rbj@icst-cmr.arpa> Why did Paul Simon name his album after Elvis Presley's house?