At 12:15 17/09/2002 +0100, Paul Furness wrote:
>Hi, everyone.
>
>I'm trying to write a bash script which is basically a wrapper around a
>number of other commands.
>
>What I _want_ to do is basically _copy_ stdout and stderr to a log file.
>
>Thus, when I run a command, I wans the stdout and stderr to go to
>wherever called the script (eg an interactive terminal) but I _also_
>want it to go to a log file.
>
>I can do it easily for things I'm echoing in my own script by writing a
>function like this:
>
>
> function ECHO
> {
> echo $1
> echo $1 >> ${Logfile}
> }
>
>and then any messages which I generate I use ECHO instead of echo:
>
> ECHO "This is a message"
>
>What I can't figure out is how do I redirect the output of the things
>I'm running to the same 2 places?
There is a command called "tee" which will pipe data to a file and stdout/stderr at
the same time
you do:
someprog | tee /tmp/some.log.file
The output of someprog is sent to stdout/stderr and the file /tmp/some.log.file
You can then do what you like with stdout/stderr as normal.
tee should be installed as it comes with sh-utils package.
--
Carl
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