将Xterm的输出重定向到日志文件

Question

I have not been able to find an answer to this problem. I have three programs kicked off in xterm for a demonstration automation script. I need to log the results of the xterm windows. Right now, my script looks as follows:

#!/bin/bash/sh

echo "NOTE - THIS PROCESS TAKES APPROXIMATELY 60 SECONDS TO RUN"

    cd ~/myProject/ProgramOne
    xterm -e ProgramOne progone.config 2>&1 /tmp/logs/p1.txt &

    cd ~/myProject/ProgramTwo
    xterm -e ProgramOne progtwo.config 2>&1 /tmp/logs/p2.txt &

    cd ~/myProject/ProgramThree
    xterm -e ProgramOne progthree.config 2>&1 /tmp/logs/p3.txt &


# allow the scripts to collect data
sleep 60

# kill the xterm sessions from running since this is just a demonstration
pkill -9 xterm

echo "******************************************"
echo "START PROGRAMS SCRIPT COMPLETE"
echo "******************************************"   

I have verified that ~/myProject/ProgramOne and ~/myProject/ProgramTwo and ~/myProject/ProgramThree all exist, as does /tmp/logs/*

The files get created, they just simply have nothing in them and do NOT contain the output of the xterm windows, which I can see popup with hundreds of lines of information.

Answer 1

xterm doesn't write to stdout; rather it displays the output of whatever command it invokes in its window. You need to redirect the output of ProgramOne , not the output of xterm .

And something I didn't notice when I initially wrote this answer: your redirection is incorrect. You're passing /tmp/logs/p1.txt as an argument to xterm . The 2>&1 redirects stderr to stdout, but does not take a file name argument. (Yes, you can mix redirections with program arguments. For example, echo >hello.out hello will write hello to hello.out )

For example change

xterm -e ProgramOne progone.config 2>&1 /tmp/logs/p1.txt &

to

xterm -e 'ProgramOne progone.config >/tmp/logs/p1.txt 2>&1' &

(I'm assuming that you want to send ProgramOne 's stdout and stderr to tmp/logs/p1.txt .)

(You could also tell xterm to log its output to a file, using the -l option, but that might be disabled and the output could include formatting characters that you probably don't want.)

Answer 2

The following change in the command worked:

xterm -e ProgramOne progone.config 2>&1 /tmp/logs/p1.txt &

to

xterm -e 'ProgramOne progone.config 2>&1 | tee /tmp/logs/p1.txt' &