Shell Programming and Scripting

Hi

I have a shell script that does a whole bunch of things. For the sake of simplicity, assume it runs commands one two and three. What i ultimately need is the ability to display the output of the entire script on the screen as well as capture the output in a file. When I try to do it in the following way, it only captures the output of command three:

command one
command two
command three 2>&1 | tee /tmp/log.txt'

This does not resolve my issue. So I thought of including all commands in a function and then trying to capture the output in a file, like the example given below. This seems to be erroneous

Since I have multiple commands to execute, if I

Func()
{
command one
command two
command three
}

#main
Func 2>&1 | tee /tmp/log.txt'


Is there a way/better way of doing this? Please advice.

Thanks

---------- Post updated at 11:10 AM ---------- Previous update was at 09:49 AM ----------

I found a working solution. After each command that needs to be logged, add 2>&1 | tee -a /tmp/log.txt. It will log on the console and also append it to the log file. Any improvements/more efficient ways of doing it are welcome.

Code:

 script_name.sh 2>&1 | tee -a log.txt

Outside the script...

If you want to redirect the output for all of the commands in the script, you can use Roozo's suggestion.

If you only want to redirect the output from some of the commands in a script that also does other "stuff", you don't need a function to group the commands and redirect the output for the group. You could use:

Code:

{ command one
command two
command three } 2>&1 | tee /tmp/log.txt

to run the commands in the current shell execution environment or:

Code:

( command one
command two
command three ) 2>&1 | tee /tmp/log.txt

to run the commands in a sub-shell execution environment.

Also:

Code:

( command1 command2 command3 ) > stdout.log 2> stderr.log