How do I redirect stderr to syslog?
An easy way to redirect all stdout/stderr of a given process to syslog is to do the following in a bash script:
- exec 1> >(logger -t MYTAG) 2>&1.
- exec 2> >(logger -t MYTAG)
- #!/bin/bash exec 1> >(logger -t YADIYADA) 2>&1 exec /PATH/TO/APP.
Does pipe redirect stderr?
So, all stdout and stderr from “command” go to /dev/null. Nothing goes to the pipe, and thus “grep” will close out without displaying anything on the screen. Also note that redirects (file descriptors) can be read-only (<), write-only (>), or read-write (<>).
How to redirect stderr to a file in Ubuntu?
Redirect stdout to one file and stderr to another file: command > out 2>error Redirect stdout to a file (>out), and then redirect stderr to stdout (2>&1): command >out 2>&1
How to redirect stdout to another file in terminal?
The classic redirection operator ( command > file) only redirects standard output, so standard error is still shown on the terminal. To redirect stderr as well, you have a few choices: Redirect stdout to one file and stderr to another file: command > out 2>error.
Can You redirect output from strace to stderr?
Commands such as time and strace write their output to stderr by default. In case of time command, the only viable alternative is to redirect output of whole command , that is alternatively, synchronous list or subshell could be redirected if you want to separate the output ( as shown in related post ):
How does BusyBox init work in syslog?
These will be held in a circular buffer in the kernel until userspace (of pretty much all distros) dump it into syslog after the filesystem is made writable and disk checks have run. This will work as long as your kernel buffer is larger than the size of the messages that happen before the logger is started.