> > Environment: openssl-0.9.8-beta3, ULTRIX 4.5, default shell
> >
> > /bin/sh has no builtin "test" and /bin/test does not understand "-x".
>
> I wonder if you could be so kind and answer few questions? How does your
> /bin/sh handle if [ ... ] or [ ... ] || ... ? Does it execute /bin/[ or
> /bin/test even then?
It executes "/bin/[" as shown below.
# ls -l /bin/\[ /bin/test
-rwxr-xr-x 2 root system 12288 Oct 18 1995 /bin/[
-rwxr-xr-x 2 root system 12288 Oct 18 1995 /bin/test
# cat t1.sh
#!/bin/sh
[ -f /bin/sh ] && echo /bin/sh exists and is a regular file
[ -x /bin/sh ] && echo /bin/sh exists and has execute permission
# ./t1.sh
/bin/sh exists and is a regular file
test: argument expected
# mv /bin/\[ /bin/\[.SAV
# ./t1.sh
sh: [: not found
sh: [: not found
# mv /bin/\[.SAV /bin/\[
> ... What happens if you do following:
# cat > /tmp/test << EOF
#!/bin/ksh
\`basename \$0\` "\$@"
EOF
# cat /tmp/test
#!/bin/ksh
`basename $0` "$@"
# chmod 755 /tmp/test; ln /tmp/test /tmp/\[
# ls -l /tmp/\[ /tmp/test
-rwxr-xr-x 2 root system 30 Jun 2 10:56 /tmp/[
-rwxr-xr-x 2 root system 30 Jun 2 10:56 /tmp/test
# PATH=/tmp:$PATH ./t1.sh
/bin/sh exists and is a regular file
/bin/sh exists and has execute permission
> Does -x work in /bin/sh scripts then?
Yes, it works!
Remark: In teTeX, Thomas Esser avoids ULTRIX's /bin/sh problems with
test -f /bin/ksh && test -z "$RUNNING_KSH" \
&& { UNAMES=`uname -s`; test "x$UNAMES" = xULTRIX; } 2>/dev/null \
&& { RUNNING_KSH=true; export RUNNING_KSH; exec /bin/ksh $0 ${1+"$@"}; }
unset RUNNING_KSH
after "#!/bin/sh" in some of his scripts.
> > (2b) keep Makefile.org, Makefile.shared unchanged and force "make" to use
> > a different shell with PROG_ENV=POSIX MAKESHELL=<better_shell>, e.g.
> > PROG_ENV=POSIX MAKESHELL=/bin/ksh ./Configure ...
> > PROG_ENV=POSIX MAKESHELL=/bin/ksh make
>
> As you may imagine, I'd prefer to provide/document workaround[s] than
> modify code to adopt ancient syntax ...
> ... ./PROBLEMS is
> probably more appropriate. A.
Yes, PROBLEMS seems to be a good place to document this (and to
use "no-sha512" and "-DVMS_TEST" with ULTRIX's cc).
Bernhard Simon, TU Wien, ZID/StS
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