Output redirection

Hi hiba_t,

mycommand 2>&1 tee filename

Sunnycoder

It is not working, the output is displayed on the screen but the file is not created ..

mycommand | tee myfile

sorry, read stdout instead of stderr (sunnycoder missed it by one pipe).

mycommand 2>&1 | tee filename

note that this is bourne syntax, you will need to be running sh or bash.

hmm, all given solutions work, somewhere, somehow

hiba_t, which shell are you using?
 sh$   mycommand  2>&1 | tee -a filename
csh% mycommand |& tee -a filename

Isn't there a solution for this that would work on most (or all) the shells?

>> Isn't there a solution for this that would work on most (or all) the shells?
I _think_ not,  but if you can write it in a script

and put #!/usr/bin/csh etc etc and put that as first line then you can run the script from within any shell and it would work ( provided you have the repective shells present in the system)

-Abhijit

Thanks, but a script wouldn't work for me because I need to execute the command in one command line and the command parameters changes from time to time..

you can still form a script

-------------------------------------------------------------
#!/bin/sh

my_command $1 $2 $3 2>&1 | tee $4
------------------------------------------------------------

call this script with same arguments as your command (here it will accept three arguments first three arguments denoted by $1, $2 and $3)  and an additional argument specifying the filename ($4)

suppose you name the above script as test.sh then command

test.sh a b c d

is same as

my_command a b c 2>&1 | tee d

But I can't create the script, since I'm executing the command through a program that will use telnet and execute one command line...

I need a to use commands that would work on most shells..

why do you not change your command in that way it writes to a file *and* to stderr?

also, following works in any shell:
  /bin/sh -c "mycommand  2>&1 | tee -a filename"