When I issue the command sudo fio myjog | tee mylog in a terminal window,
I can save the fio log into the mylog file.
But if I issue the command sudo gnome-terminal -x sudo fio myjog | tee mylog, the mylog file will be created without any text inside.
How to capture a printed log from gnome-terminal -x ?
Each command run in the command line is, in order:
In this case | makes the shell interpret sudo gnome-terminal -x sudo fio myjog | tee mylog as two commands piped to each other (sudo gnome-terminal -x sudo fio myjog and tee mylog, the first one piped to the second one).
The result of this is that the output of sudo gnome-terminal -x sudo fio myjog is piped to tee mylog; since gnome-terminal doesn't output anything, mylog is empty.
Use the -e option to pass the command to be executed as an argument;
Commands passed through the -e options are executed in sh;
In this case, since you want to use a pipe, which is a bash (and other shells) feature, you'll need to explicitly run the command in bash (on a side note: you don't need sudo to run gnome-terminal if you're going to use sudo in the argument to the -x / -e options):
gnome-terminal -e "bash -c "sudo fio myjog | tee mylog""
