write from standard output to different files (Without screen printing)

Question

I need help about the following

how to write $Log_general to Log1 and Log2 on both time (Without screen printing !)

remark: Log1 and Log2 files need to update separately from $Log_general, I dont want to copy Log1 to Log2!!

I try the following but only Log2 was update

 echo $Log_general 1>Log1 1>Log2

or

./my_script.sh 1>Log1 1>Log2

or

the problem with the follwiong was that $Log_general output appears on screen
And I my target is to write only to the files: Log1 Log2


 echo  $Log_general | tee -a Log1 Log2

Answer 1

You should be able to use the tee command to pipe output first to one file and stdout, and then the stdout to the second file. Something like:

echo $Log_general | tee Log1 > Log2

Edit:

I didn't see your edit Jennifer before I posted, but the usage above doesn't output to the screen for me (I'm running cygwin though, rather than a Linux terminal - hopefully the output is the same)

Answer 2

./bash.sh | tee -a /path/to/firstfile 

If you are trying to append the output of a bash script file to a single file, then the above code will work.

./bash.sh | tee -a /path/to/firstfile |tee -a /path/to/secondfile

The second bit of code should work to write the same output to two different files. I'm using Xubuntu and it works for me.