Linux expr command vs. FreeBSD version

Sean McNeil sean at
Thu May 4 17:33:10 UTC 2006

On Thu, 2006-05-04 at 12:49 -0400, Kris Kennaway wrote:
> On Tue, May 02, 2006 at 03:50:40PM -0700, Sean McNeil wrote:
> > 
> > I ran into a problem with paths when running linux emulation.  It
> > appears that when looking for a file, linux emulation will first
> > try /compat/linux/path and if not found, /path.  This causes grief with
> > expr as the Linux version supports enhancements like "expr match"
> > whereas the FreeBSD version does not.  To get around the issue, I put a
> > symlink in /compat/linux/bin/expr -> /compat/linux/usr/bin/expr. I don't
> > know of any better solution.  Anyone?
> Why is this an issue for you?

Like I said, the FreeBSD expr command doesn't support things like "expr
match".  FreeBSD puts expr in /bin and Linux puts it in /usr/bin.
Appropriately, my path looks at /bin before /usr/bin.

I have scripts that run perfect on a Linux machine and fail on FreeBSD
with Linux emulation because they use that very feature.  It is
completely silly to have to change my scripts to be "/usr/bin/expr
match", so the solution I use is to put the symlink in the Linux
environment so that /bin/expr chooses the Linux version of expr


More information about the freebsd-emulation mailing list