Bash question - redirect stderr to a variable

[Nathan England]

I would suggest you stick with

  commendtoexecute 1 >> logfile.log 2 >> errorfile.log

doing

2>&1 1>>everything.log

On Mon, Mar 14, 2011 at 10:45 PM, Bryan O'Neal <
Bryan.ONeal at theonealandassociates.com> wrote:

> Ok - if I want to direct stranded out, standard error, or both to a
> file I can do that. If I want to redirect standard out to a variable
> for latter use, I can do that. But how do I redirect standard error to
> a variable?
>
> Example:
>
> function fun1()
> {
>    val1=$(DoSomething with $1)
>    if [[ $? -eq 1 ]]; then
>       echo "DoSomething failed on value $1" >> logfile.log
>       return 1
>    else
>       if [[ $val1 some test ]]; then
>          echo "Condition met" >> logfile.log
>          val2=$(DoSomethingElse with something and $val1 and $1)
>          echo $val2
>          return 0
>       else
>          echo "Condition not met" >> logfile.log
>          return 1
>      fi
>   fi
> }
>
> fun1 somevalue
>
>
>
> So this is fine and good - but what if I want to know what the error
> was from a bad call to DoSomething - Further more what if instead of
> using a simple >> logfile.log I am using a complex function that
> correlated messages and creates a human readable log file? I would 1)
> spam roots email, and 2) lose the information as to what went wrong
> and where?  I want to store std error into a variable (same or
> diffident var from expected output) so I can choose how to handle it.
>
>
> On of the things I have done is started to work on a logger4Bash
> function. It took a few min and has deferent log levels, deferent log
> files, tags, formatting, etc. Problem is what to do when information
> is spawned to standard out instead of being stored in a var I can
> manipulate latter.
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-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Nathan England

I believe in the Constitution and the 4th Amendment. I am innocent and have
nothing to hide, but NO agent of the state crosses my threshhold without a
valid warrant signed by a judge and properly submitted. If we fail to
exercise our rights, we lose them.
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