[arch-general] bash - pathname expansion controls 'set -f' or 'set -o noglob' on broken?

[David C. Rankin]

On 08/13/2010 02:27 AM, C Anthony Risinger wrote:
> On Fri, Aug 13, 2010 at 2:10 AM, mike rosset<schizoid29 at gmail.com>  wrote:
>> Dave you need to quote your variables ie.
>>
>> var="*pacman*"; echo "$var"
>>
>> so  printf "Search:  %s\n" $myvar should read
>>
>> printf "Search:  %s\n" "$myvar"
>>
>> On Thu, Aug 12, 2010 at 11:39 PM, David C. Rankin
>> <drankinatty at suddenlinkmail.com>  wrote:
>>> On 08/13/2010 01:32 AM, David C. Rankin wrote:
>>>>
>>>> On 08/13/2010 01:15 AM, mike rosset wrote:
>>>>>
>>>>> quote command arguments like you would normally do.
>>>>>
>>>>> ie. $ myscript "*pacman*"
>>>>
>>>> Nope:
>>>>
>>>> 01:32 nirvana:~/scr/arch/tmp>  ./tst.sh "pacman*"
>>>> Search: pacman-foo
>>>>
>>>>
>>>
>>> Mike,
>>>
>>>         I'm sorry, that was a short answer. My thoughts in this situation
>>> were that partial or soft-quoting "" would not offer any additional
>>> protection that full or hard-quoting '' did not already provide. From ABS:
>>>
>>>     partial quoting [double quote]. "STRING" preserves (from interpretation)
>>> most of the special characters within STRING.
>>>
>>>     full quoting [single quote]. 'STRING' preserves all special characters
>>> within STRING. This is a stronger form of quoting than "STRING".
>>>
>>>         I'd run across this a couple of days ago on the pacman -Ss reformat
>>> script work.
>
> yes what mike said is correct.  the best way to remember/catch stuff
> like this, is to always remember that bash variables are almost pure,
> direct "text-replacement"; by this i mean the contents of the variable
> are substituted in place of the variable, and _then_ the expression is
> evaluated.  so, in your case, this line:
>
> printf "Search:  %s\n" $myvar
>
> expanded/substituted as:
>
> printf "Search:  %s\n" pacman*
>
> which expanded yet again by bash to:
>
> printf "Search:  %s\n" pacman-foo
>
> before finally being passed to printf().
>
> C Anthony
>


Guys,

	Oh 5h17!! (said while wearing the dunce cap). When at first I got stuck on 
this, I created a new directory and copied the script into it along with 
pacman-foo for testing. I had my editor open and the script up via sftp to the 
server. Some idiot never closed the original script and re-opened the copy of 
the script in the new tmp subdirectory... So all the quoting, etc. I did, never 
changed the script I was running :-(

	That's it -- I'm going to bed.. Thanks for the help.

P.S. full picture:

                                   Arch Server
-----------     editing        =================
| me on my |----------------->| original - dir 1|
| laptop   |---------------\  |    |            |
-----------     running     ->| copy in  - dir 2|
                                =================


it's good to laugh at yourself every once in a while :p



-- 
David C. Rankin, J.D.,P.E.
Rankin Law Firm, PLLC
510 Ochiltree Street
Nacogdoches, Texas 75961
Telephone: (936) 715-9333
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