[Linux-disciples] write to file from shell script

[Stephen R Laniel]

Ah yes, excuse me. fork-and-exec is the classic Unix way to run a process; 'eval' is the command-generation business.

On Nov 16, 2011, at 9:39 PM, Dylan Thurston wrote:

> Steve, I think you're confusing 'exec' with 'eval'.  'eval' does what
> you say; 'exec' stops execution of the current program and switches to
> the new one.  I think it would be harmless here, and would save a
> small amount of memory.
> 
> --Dylan
> 
> On Tue, Nov 15, 2011 at 10:18:12PM -0500, Stephen R Laniel wrote:
>> Huh. Running 'exec' is basically never the right idea. That's what you run, if I'm not mistaken, when you construct a string using some long combination of things -- I don't know, grep, sed, whatever -- and then need the shell to interpret the string you've just constructed as a command. It wouldn't apply here.
>> 
>> I mean, all you're doing here is
>> 
>> 1. running a command
>> 2. dumping the output of that command to a file
>> 
>> , right? No need for exec here. So what happens if you drop the exec?
>> 
>> Also, stick an
>> 
>> echo $logfile
>> 
>> between the 'logfile' line and the 'gondor' line.
>> 
>> On Nov 15, 2011, at 10:15 PM, Jamie Forrest wrote:
>> 
>>> I seem to have solved it as follows:
>>> 
>>> #!/bin/bash
>>> 
>>> logfile=/Users/jforrest/Projects/django-cnsltme/cnsltme/backup/`date
>>> +%F`_dump.sql
>>> exec gondor sqldump primary > $logfile
>>> 
>>> Is it correct?
>>> 
>>> 
>>> On Tue, Nov 15, 2011 at 10:08 PM, Adam Rosi-Kessel <adam at rosi-kessel.org> wrote:
>>>> On 11/15/2011 10:01 PM, Jamie Forrest wrote:
>>>>> 
>>>>> I'm running it from a subdirectory in my home dir. I tried changing it
>>>>> to a full path and still no dice. And yes the output from gondor
>>>>> sqldump goes to screen normally.
>>>> 
>>>> Add 2>&1 ?
>>>> 
>>> 
>>> 
>>> 
>>> -- 
>>> http://about.me/jamieforrest
>>> _______________________________________________
>>> Linux-disciples mailing list
>>> Linux-disciples at lists.bostoncoop.net
>>> http://lists.bostoncoop.net/mailman/listinfo/linux-disciples
>>> 
>> 
>> -- 
>> Stephen R. Laniel
>> steve at stevereads.com
>> Cell: +(617) 308-5571
>> http://stevereads.com/
>> PGP key: http://stevereads.com/slaniel.key
>> 
>> _______________________________________________
>> Linux-disciples mailing list
>> Linux-disciples at lists.bostoncoop.net
>> http://lists.bostoncoop.net/mailman/listinfo/linux-disciples
>> 
> _______________________________________________
> Linux-disciples mailing list
> Linux-disciples at lists.bostoncoop.net
> http://lists.bostoncoop.net/mailman/listinfo/linux-disciples
> 

-- 
Stephen R. Laniel
steve at stevereads.com
Cell: +(617) 308-5571
http://stevereads.com/
PGP key: http://stevereads.com/slaniel.key