fischer@iesd.auc.dk (Lars P. Fischer) (01/09/91)
Archive-name: unix/shell/bash/1991-01-08
Archive: prep.ai.mit.edu:/pub/gnu/bash-1.05*.tar.Z [18.71.0.38]
Original-posting-by: fischer@iesd.auc.dk (Lars P. Fischer)
Original-subject: Re: Questions concerning BaSH
Reposted-by: emv@ox.com (Edward Vielmetti)
>>>>> On 8 Jan 91 15:47:46 GMT, jc@bu-pub.bu.edu (James Cameron) said:
James> I have seen a few references to Bash. I was just curious as to where
James> I can get it, and what are the pros cons in comparison to tsch.
The Bourne Again SHell is available from prep.ai.mit.edu and several
other places.
Compared to tcsh:
- bash i sh syntax, which is much nicer and what you use for scripts
anyway. Being able to pipe output from a loop i a must.
- bash has a more powerful command line editor, ie. you can search
for a line containing any string, etc.
- the command line editor used in bash is available as a library for
use in other programs. If you change the key bindings, it takes
effect in *all* programs that use the command line editor. I like
this a lot for use in gdb etc.
- command line editing lets you retrieve individual lines from a
loop, say. Being able to get the first line only is a true tcsh
brain damage.
- You get the src to hack.
- The price is right :-)
Overall, it's a matter of preference: sh or csh. I used to be a csh
user, but nowadays I much prefer sh.
Try it.
/Lars
--
Lars Fischer, fischer@iesd.auc.dk | Q: How does a project get to be one
CS Dept., Univ. of Aalborg, DENMARK. | year late? A: One day at a time.chet@odin.INS.CWRU.Edu (Chet Ramey) (01/12/91)
Archive-name: unix/shell/cwru-bash/1991-01-10 Archive-directory: ftp.cwru.edu:/pub/bash/ [129.22.8.44] Original-posting-by: chet@odin.INS.CWRU.Edu (Chet Ramey) Original-subject: Re: Questions concerning BaSH Reposted-by: emv@ox.com (Edward Vielmetti) In article <1991Jan10.183056.20614@spool.cs.wisc.edu> bothner@sevenlayer.cs.wisc.edu (Per Bothner) writes: >> = Michael D Mellinger > = Per Bothner >>I found BASH 1.05 to be very unstable. > >I haven't. Very infrequently (less than once a month), >I've noticed it freeze up on me, but generally I have no problems. > >>I wouldn't use it as my login shell. > >I do on my home Sony (68020, bsd 4.3-based), on my friend's >DECstation3100, and I use it as my main shell (though I haven't >updated /etc/passwd) on my office DEC3100. I can't let an opportunity like this go by :-) (CWRU bash is what is described in the manual page, available for anon ftp from ftp.cwru.edu (aka cwns2.ins.cwru.edu, 129.22.8.44) in the directory pub/bash. Differences from the distributed versions of bash are in the file CWRU-differences in the same directory.) Everyone in my department uses CWRU bash as his login shell, and I have given it to a number of other departments here, where it is also in daily use as a login shell. It has been my login shell since version 0.93. (Of course, I fix all the problems I find myself.) It runs as /bin/sh on my home machine (an IBM RT running 4.3 BSD) and on a pool of RTs here at work. Again, few or no complaints. A couple of people here are writing large shell applications using it -- it's far more capable than the BSD sh. >Version 1.06 is long overdue... Agreed. >tcsh is ok, but it is a bit of a kludge, and it requires csh >source. Also, I would advise against writing major macros >or programs using [t]csh, given that the Posix standard >(and ksh and bash) are based on Bourne shell syntax. CWRU Bash is an implementation of the Posix.2 shell spec, as of draft 9 (and bits of draft 10). It also includes most of the Posix.2a spec, as of draft 5. (I'd advise against writing csh applications anyway; the parser is flakier than a bowl of cereal.) >>BTW: The BASH binary(like most GNU binaries) is quite large. It was not `written small' like sh. It actually uses the C library. It does not have some of the built-in size limits of sh. The line editing code takes up a tremendous amount of space. Chet -- Chet Ramey ``There's just no surf in Network Services Group Cleveland, U.S.A. ...'' Case Western Reserve University chet@ins.CWRU.Edu My opinions are just those, and mine alone.