Re: Yet Another test option

[Bruce Korb]

Hi,

CF: a thread from bug-bash:

On 07/06/11 06:38, Chet Ramey wrote:
> On 7/5/11 8:59 AM, Bruce Korb wrote:

> Given that sort(1GNU) now has a sort-by-version-ordering (sort -V),
> it would seem reasonable to do version comparisons without having
> to do a series of fork & execs.  In other words, abbreviate this:
>
>     min_os_ver=`
>       printf '2.6.27\n%s\n' "$LINUXRELEASE" | sort -V | head -1`
>     if test "X$min_os_ver" = "X2.6.27" ; then
>
> into something like this:
>
>     if test "2.6.27" -Vle "$LINUXRELEASE" ; then
>
> or add a different operator to [[ ]] contexts?

> > > The issue is extremely nontrivial.
> >
> > The normal case is to sort full releases.  The goal in "sort -V" was to make
> > the usual case easy, not to make the authoritative solution for an intractable
> > problem. [...]  In my little world, it would be quite convenient.
>
> This is an excellent argument for a utility to perform version comparisons.
> Such a program could be arbitrarily complex.  This feature is too new to
> know how it will evolve.

/usr/bin/test ?

Do this first in the binary then migrate to bash's test?