[ale] bash commands

[arxaaron]

On 2012/05/18, at 17:55 , Drifter wrote:

> Thanks.  That did it.
>
> sean
>


Pipes ["|"] are for moving output across processes.

I suspect that bash was trying to run your empty text file
as a process.  "Permission Denied" was an appropriate
error message.

Redirects [">" | ">>"] are for writing output streams to files.
The first version appends to the file (and creates it if it doesn't
exist),  the second "double" form overwrites the file (or creates
it if it doesn't exist)

HTH
peace
aaron

> ------------------------------------------------------------------------------------
>
> On Friday, May 18, 2012 05:37:43 pm Robert L. Harris wrote:
>> try ">" instead of "|"
>>
>> On Fri, May 18, 2012 at 3:27 PM, Drifter <drifter at oppositelock.org>
> wrote:
>>> I keep reminding myself that I don't begin to know what I think I
>>> know! :(
>>>
>>> I am about to upgrade this box, finally from FC 13 to FC 14.
>>> Ought to be simple enough.  I have the CD, which I think will do a
>>> clean install onto a software RAID.
>>>
>>> Prior to that I really ought to have on hand a list of all the
>>> installed packages.
>>>
>>> So I created a file <app_list.txt> on the Desktop and then tried
>>> this:
>>>
>>> yum list installed | ~/Desktop/app_list.txt
>>> and got back this
>>>
>>> bash: /home/kilpatms/Desktop/app_list.txt: Permission denied
>>>
>>> WTF!
>>>
>>> So I checked the perms on the existing (empty) file and they were
>>> correct. Then I tried the same thing as root, expanding the ~/ and
>>> got the same response.
>>>
>>> So, How DO I make yum throw a list of the installed packages to a
>>> text file rather than to the terminal?
>>>
>>> Sean
>>>
>>>
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