Carlos E. R. wrote:
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The Tuesday 2008-01-08 at 06:35 -0700, Bill Anderson wrote:
> Bill Anderson wrote:
> > Bourne shell compatibility. You might also note that under
Linux > > it is /usr/bin/sh, /usr/bin/ksh, and /bin/bash.
No, not really:
[EMAIL PROTECTED]:~> l /bin/sh /usr/bin/sh
lrwxrwxrwx 1 root root 4 2007-11-03 02:13 /bin/sh -> bash*
lrwxrwxrwx 1 root root 9 2007-11-03 02:13 /usr/bin/sh -> /bin/bash*
[EMAIL PROTECTED]:~> l /bin/ksh /usr/bin/ksh
lrwxrwxrwx 1 root root 16 2007-11-03 16:07 /bin/ksh ->
/lib/ast/bin/ksh*
lrwxrwxrwx 1 root root 16 2007-11-03 16:07 /usr/bin/ksh ->
/lib/ast/bin/ksh*
[EMAIL PROTECTED]:~> l /bin/bash /usr/bin/bash
ls: cannot access /usr/bin/bash: No such file or directory
- -rwxr-xr-x 1 root root 604040 2007-09-22 00:16 /bin/bash*
My original comment about /bin being linked to /usr/bin applied only
to Solaris, AIX, and HPUX. Yet, all the examples of why I am wrong
are from Linux. If you were on a Unix system, there would not be a
/lib/ast/ksh, as KornShell is in /usr/bin. The other difference you
will notice is that AIX now has bsh for Bourne Shell. Those who use
Unix also notice the emphasis on hard links in Unix versus symbolic
links in Linux.
You said:
]>>>> Bourne shell compatibility. You might also note that under Linux
]>>>> it is /usr/bin/sh, /usr/bin/ksh, and /bin/bash.
Notice you speak in this paragraph about Linux, and that's the one I was
comenting about.
I just used the results of the which command. Although, I prefer the
whence command of ksh.
Also, notice that symbolic links are needed to cross partitions:
that's why they are preferred sometimes (specially for files in /usr)
I know. You forget that I have been in this game for awhile. I remember
when symbolic links were added to Unix. In Version 7 Unix, circa 1978,
there were no symbolic links.
- -- Cheers,
Carlos E. R.
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