Date: Mon, 21 Jun 1999 07:40:27 -0400 (EDT) From: mwang@tech.cicg.ml.com (Michael Wang) To: freebsd-questions@FreeBSD.ORG Subject: RE: what is the command named "[" in /bin directory? Message-ID: <199906211140.HAA05809@cicgload-fs1-p.tech.cicg.ml.com>
next in thread | raw e-mail | index | archive | help
> > Thank you very much for the quick response. Solaris [System V]
> > treats test, cd, alias, bg, ..., 17 such "command" as ksh built in.
> > See
> > below. It is interesting to see that BSD treats "[" as a real command.
> >
> >
> > Thanks again.
> [ML] They are built in in pdksh, bash, tcsh, etc as well.
>
> They are not built in in /bin/sh. Not even in Solaris. And
> /bin/sh is the standard scripting shell. However, the /bin/sh may be
> internally interpreting [ as a call to test (which the FreeBSD /bin/sh
> apparently does not do, hence /bin/[).
How did you conclude that they are not built in in /bin/sh
in Solaris? My conclusion is test and "[" are /bin/sh built-ins. test
is a built-in per shell_builtins man page, and [ ... ] is the same as
test. There is no "[" command in Solaris.
The following is a list of shell_builtins from man page in Solaris:
command built into
alias csh, ksh
bg csh, ksh, sh
break csh, ksh, sh
case csh, ksh, sh
cd csh, ksh, sh
chdir csh, sh
continue csh, ksh, sh
dirs csh
echo csh, ksh, sh
eval csh, ksh, sh
exec csh, ksh, sh
exit csh, ksh, sh
export ksh, sh
fc ksh
fg csh, ksh, sh
for ksh, sh
foreach csh
function ksh
getopts ksh, sh
glob csh
goto csh
hash ksh, sh
hashstat csh
history csh
if csh, ksh, sh
jobs csh, ksh, sh
kill csh, ksh, sh
let ksh
limit csh
login csh, ksh, sh
logout csh, ksh, sh
nice csh
newgrp ksh, sh
notify csh
onintr csh
popd csh
print ksh
pushd csh
pwd ksh, sh
read ksh, sh
SunOS 5.7 Last change: 1 Feb 1995 1
User Commands shell_builtins(1)
readonly ksh, sh
rehash csh
repeat csh
return ksh, sh
select ksh
set csh, ksh, sh
setenv csh
shift csh, ksh, sh
source csh
stop csh, ksh, sh
suspend | csh, ksh, sh
switch | csh
test | ksh, sh
time | csh
times | ksh, sh
trap | ksh, sh
type | ksh, sh
typeset | ksh
ulimit | ksh, sh
umask | csh, ksh, sh
unalias | csh, ksh
unhash | csh
unlimit | csh
unset | csh, ksh, sh
unsetenv | csh
until | ksh, sh
wait | csh, ksh, sh
whence | ksh
while | sh, ksh, sh
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199906211140.HAA05809>