Bakul Shah <bakul@bitblocks.com> writes:

quoted text
> On Mon, 03 Jan 2011 21:20:42 +0300 Anonymous <swell.k@gmail.com>  wrote:
>> 
>> Do you mean perror(1)?
>> 
>>   $ perror 5
>>   Input/output error
>
> I prefer mine:
>
> $ errno () { grep "^#.*\<$*\>" /usr/include/sys/errno.h }
> $ errno 5
> #define EIO             5               /* Input/output error */
> $ errno EIO
> #define EIO             5               /* Input/output error */

perror(1) displays localized messages

  $ LANG=ja_JP.UTF-8 perror 5
  入出力エラーです

  $ LANG=uk_UA.UTF-8 perror 5
  Помилка вводу-виводу

but I have to agree that knowing errno macro is useful
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