Redirect output to multiple files.

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# 1  
Old 08-20-2003
Redirect output to multiple files.


I am new to shell scripting and have a question. I would like to redirect the output of a command to multiple files, each file holding the exact same copy. From what I read from the bash manpage and from some searching it seems it cannot be done within the shell except setting up a loop. Is it?
# 2  
Old 08-20-2003

Unix has a beatifull command for that : "tee"

perform a :

who | tee -a file1 file2 file3 file4

this will write the output of who to your screen, file1,file2,file3 and file4.

Please look at "man tee" for all the details.

Regs David
# 3  
Old 08-20-2003
Thanks very much for your reply.

From my search I have found `tee' can do it. However, actually I would like to ask if it can be done directly on the shell without using external programs, on the bash shell for example.
# 4  
Old 08-20-2003
Nope, you have one STDIN, STDOUT, STDERR device redirected to your TTY, you can choose to redirect it to a file, but not both without using tee.

If you are searching for this in cause of user auditing, there are multiple methods for it. Please us know if this is the case.

Regs David
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