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How to redirect the output of an already running process?
The command bellow redirects the outputs (standard and error) of the process PID to FILE: The README of reredirect also explains other interesting features: how to restore the original state of the process, how to redirect to another command or to redirect only stdout or stderr.
How to redirect output to a log file and background?
Note that the &> directs both stdout and stderr to output.log Stopping with and continuing in the background with bg is equivalent to execute with & at the end of the command. If you also need that this command does not die when you leave the terminal, then you should use nohup
How to log the output of a process?
If process is running in a screen session you can use screen’s log command to log the output of that window to a file: Switch to the script’s window, C-a H to log. Start/stop writing output of the current window to a file “screenlog.n” in the window’s default directory, where n is the number of the current window.
Can You redirect stdout to a log file?
One problem with your first command is that you redirect stderr to where stdout is (if you changed the $ to a & as suggested in the comment) and then, you redirected stdout to some log file, but that does not pull along the redirected stderr.
How to restart or reset a running process in Linux?
Send your program a TERM signal. If your program needs to perform any cleanup, write a signal handler. That doesn’t preclude having a program-specific command to make it shut down if you have an administrative channel to send it commands like this. Make your client exec /proc/self/exe when it receives that paticular message.
How does stop process work in Windows 10?
Stops one or more running processes. The Stop-Process cmdlet stops one or more running processes. You can specify a process by process name or process ID (PID), or pass a process object to Stop-Process . Stop-Process works only on processes running on the local computer.
How to see the stdout of a running process?
You can point it at a specific process with lsof -p1234, and you’ll see mostly the same information as you can get with ls -l /proc/1234/fd under Linux, i.e. what files are opened. The most useful thing with lsof is going the other way round: lsof /path/to/file tells you what processes are using that file.
Is it possible to redirect a process in Linux?
When working in Linux, it’s very common to use redirections. For example, we can run a program and silence the output that it generates when we execute it. However, bash doesn’t provide any direct method to redirect the output once a process is running.
How to redirect strace from stdout to stderr?
It catches all streams, so you might want to filter that somehow: shows only descriptor 1 calls. 2>&1 is to redirect STDERR to STDOUT, as strace writes to STDERR by default. create the following two files in the same directory, something in your path, say $HOME/bin: