nohup standerd error

Shell Programming and Scripting
1

hi,

im using nohup command to execute one script.
in the nohup.out im getting standerd output as well as standerd error in it.
i want standerd output and error in nohup.out and only standerd error in error.txt file.

im using command like following
nohup sh test.sh 2>error.txt &

in this case im able to get error in error.txt file but not in nohup.out file

pl help

thanks in advance

2

In ksh:

nohup sh test.sh > error.txt 2>&1 &
3

same is not working

i want standerd output and error in nohup.out and only standerd error in error.txt file.

or is there any way to get only error from txt file

4

That's something pretty difficult to manage since one file descriptor can only write to one file. I don't see how to make it work with tee either, when different data's being written to different files.

5

Corona is correct.

Once stderr has been redirected somewhere.... that's where it goes.

You ~can~ get both stderr and stdout into the nohup.out like so:

nohup ksh -c "alkhalskdhfalkshdf ; date ; ps -deaf ; echo alshldfh ; aslkdhalskhhflasd " 2>&1
6

You may try something like this:

{ nohup cmd 2>&1 >&3 3>&- | tee error.txt; } >nohup.out 3>&1

The Z-Shell shell has support for an internal tee mechanism with its
multios option:

nohup cmd 2>error.txt >nohup.out 2>&1