moreutils: an 'errno' utility

[Tim Chavez]

Hi Soren,

On Thu, Aug 26, 2010 at 3:52 AM, Soren Hansen <soren at ubuntu.com> wrote:
> I've been using MySQL's perror(1) util for this for years, but being
> able to search through the error messages is pretty neat, so for giggles
> I wrote a version of it in Python that does not depend on dev headers of
> any kind being installed. I put it in this branch:
>
>    lp:~soren/ubuntu-dev-tools/py-errno
>
> You can see the code directly here:
>
>
> http://bazaar.launchpad.net/~soren/ubuntu-dev-tools/py-errno/annotate/head%3A/errno
>
> I'm not sure what's going on with the syntax highlighting on that page,
> though. Maybe it still thinks it's bash.
>
> Anyways, going this route for moreutils would make it grow a python
> dependency which I somehow doubt is desirable. It's not rocket science,
> though. It should be easily portable to perl.
>
> --
> Soren Hansen
> Ubuntu Developer
> http://www.ubuntu.com/

Also, the 'errno' Python module has an incomplete mapping.
Specifically, it is missing:

ENOMEDIUM       123     /* No medium found */
EMEDIUMTYPE     124     /* Wrong medium type */
ECANCELED       125     /* Operation Canceled */
ENOKEY          126     /* Required key not available */
EKEYEXPIRED     127     /* Key has expired */
EKEYREVOKED     128     /* Key has been revoked */
EKEYREJECTED    129     /* Key was rejected by service */
EOWNERDEAD      130     /* Owner died */
ENOTRECOVERABLE 131     /* State not recoverable */
ERFKILL         132     /* Operation not possible due to RF-kill */

(output generated by Dustin's version)

I only know this because I hacked out a version of this program last
night as well :) My spin on this program was to only take an error
number or a range of error numbers as input and then output the
translation(s).  The program supports an open-ended range (e.g. 1:)
which will return translations for all error numbers.  The user can
then apply search terms via grep to find what they're looking for.

Anyway,

fluxcrank:~$ ./errno 5:15
5       EIO                             Input/output error
6       ENXIO                           No such device or address
7       E2BIG                           Argument list too long
8       ENOEXEC                         Exec format error
9       EBADF                           Bad file descriptor
10      ECHILD                          No child processes
11      EAGAIN                          Resource temporarily unavailable
12      ENOMEM                          Cannot allocate memory
13      EACCES                          Permission denied
14      EFAULT                          Bad address
15      ENOTBLK                         Block device required

Warning: My version uses string.format() which I believe requires >= Python 2.6

-- 
-tim
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