[AKO Warning - Message fails DKIM verification] RE: Strange assignment (UNCLASSIFIED)

[Glasgow, Steven Mr CIV USA TRADOC]

Classification: UNCLASSIFIED
Caveats: NONE

Maarten,  It looks to me that set creates a "string" variable while @
creates a "numeric" one.  There was a bug in tcsh which was corrected
between RHEL 4.7 and RHEL 5.4.  All numbers beginning with 0 should be
considered octal and they were not prior to this fix.  44 octal is 36
decimal.

This stemmed from the following command I had in one of my scripts:

@ D=`date +\%m%d%y`

This should have returned 10311, but because %m is 01, the string 010311
was being considered octal and D was getting assigned the value 4297
(10311 converted from octal to decimal).

Using set works just fine if I want the leading 0 on the month.  If not,
this command works too:

@ D=`date +\%-m%d%y`

The "-" removes the leading 0 from the month and D gets assigned the
value 10311.

Thanks again,
Steve

-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com] On Behalf Of Broekman, Maarten
Sent: Monday, January 03, 2011 1:31 PM
To: General Red Hat Linux discussion list
Subject: [AKO Warning - Message fails DKIM verification] RE: Strange
assignment (UNCLASSIFIED)

Try using 'set' instead of '@'.  From the behavior, it seems like '@'
will perform math on the values in the assignment whereas set doesn't.
Not sure why the difference though.

[tcsh]$ set D=044 ; echo $D
044
[tcsh]$ @ D=044 ; echo $D
36

--Maarten

>  -----Original Message-----
>  From: redhat-list-bounces at redhat.com [mailto:redhat-list-  
> bounces at redhat.com] On Behalf Of Glasgow, Steven Mr CIV USA TRADOC
>  Sent: Monday, January 03, 2011 1:20 PM
>  To: General Red Hat Linux discussion list
>  Subject: RE: Strange assignment (UNCLASSIFIED)
>  
>  Classification: UNCLASSIFIED
>  Caveats: NONE
>  
>  Both /bin/tcsh and /bin/csh have the same results.
>  
>  Steve
>  
>  -----Original Message-----
>  From: redhat-list-bounces at redhat.com
>  [mailto:redhat-list-bounces at redhat.com] On Behalf Of m.roth at 5-cent.us
>  Sent: Monday, January 03, 2011 10:43 AM
>  To: General Red Hat Linux discussion list
>  Subject: Re: Strange assignment (UNCLASSIFIED)
>  
>  Glasgow, Steven Mr CIV USA TRADOC wrote:
>  >
>  > To anyone that can help,
>  >
>  > Something has changed between RHEL 4.7 and RHEL 5.4...
>  >
>  > RHEL 4.7:
>  >
>  > @ D=44 ; echo $D returns 44
>  > @ D=044 ; echo $D returns 44
>  > @ D=08 ; echo $D returns 8
>  >
>  > RHEL 5.4:
>  >
>  > @ D=44 ; echo $D returns 44
>  > @ D=044 ; echo $D returns 36 --- HUH?
>  > @ D=08 ; echo $D returns @: Badly formed number --- HUH?
>  >
>  > Seems to be an octal thing going on.  Would anyone be able to shed

> some  > light on this and how I might get 5.4 to act more like 4.7?
>  
>  What shell?
>  
>           mark
>  
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