On 10/02/2014 08:40 PM, Dr. Werner Fink wrote:

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a file in /usr/bin named " [ " :

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-rwxr-xr-x 1 root root 39704 Sep 28 21:42 [

.......................

- is this orthodox ?

Why? Run

man [

Dr Werner ~ thank you regards -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2014-10-02 20:37, Felix Miata wrote:

ellanios82 wrote on 2014-10-02 21:06 (UTC+0300):

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Dr. Werner Fink wrote: ...

...

...

a file in /usr/bin named " [ " :

...

-rwxr-xr-x 1 root root 39704 Sep 28 21:42 [

...

...

Why? Run man [

I see it, but I don't get how "[" relates to a man page for "BASH_BUILTINS" or "General Commands Manual"?

because there are both an "external" program with that name, and an internal bash builtin, with the same name and functionality. Bash uses the internal code, obviously. I don't know what uses the external, probably other (older / more basic) shells. - -- Cheers / Saludos, Carlos E. R. (from 13.1 x86_64 "Bottle" at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iEYEARECAAYFAlQtnWUACgkQtTMYHG2NR9Wf/ACdG5pvuCDt1AW4HviFtM9t+H1s gG8AnAhEklIJaimWY8rFn/qM87kFDJ4A =6WE6 -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org

On 10/03/2014 12:09 AM, Bernhard Voelker wrote:

That's part of coreutils

sorry, here's the missing proof: $ rpm -qf '/usr/bin/[' coreutils-8.21-7.16.1.x86_64 Have a nice day, Berny -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org

On 10/03/2014 08:43 AM, Neil Rickert wrote:

On Thu, 02 Oct 2014 20:39:01 +0300 ellanios82 wrote:

...

Hello List,

- in case of interest : see a file in /usr/bin named " [ " :

-rwxr-xr-x 1 root root 39704 Sep 28 21:42 [

.......................

- is this orthodox ?

Originally, the Bourne shell "if" was of the form

if command ; then ... fi

The shell would run the command and see if it succeeded (gave a return value of 0). You can still use "if" that way, though it is often considered bad form.

If you would instead like to have:

if [ expression ] ; then ... fi

then the obvious way to do that is to have a command named "[" whose job is to evaluate its arguments (excluding a final "]") as a logical expression and to succeed (return 0) if the expression is true.

That's how the command "[" got started. And it is still there for backward compatibility (if you have a really really old version of Bourne shell). ...............

- interesting : thank you ............. -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org