How do I redirect all output from a bash script?
To use bash redirection, you run a command, specify the > or >> operator, and then provide the path of a file you want the output redirected to. > redirects the output of a command to a file, replacing the existing contents of the file.
How do I redirect all output to Dev Null?
You can send output to /dev/null, by using command >/dev/null syntax. However, this will not work when command will use the standard error (FD # 2). So you need to modify >/dev/null as follows to redirect both output and errors to /dev/null.
How to redirect output from a shell to a file?
Normal output is sent to the screen, while the echo message which has >&2 symbol sends errors to the file. If you have much data that need to be redirected, you can have a permanent redirection using the exec command like this: #!/bin/bash exec 1>outfile echo “Permanent redirection” echo “from a shell to a file.”
How to redirect command output in PowerShell?
You can use the following methods to redirect output: Use the Out-File cmdlet, which sends command output to a text file. Use the Tee-Object cmdlet, which sends command output to a text file and then sends it to the pipeline. Use the PowerShell redirection operators.
How to redirect output to a descriptor?
Thus only stdout is pointing at the file, because stderr is pointing to the “old” stdout. Another common use for redirecting output is redirecting only stderr. To redirect a file descriptor, we use N>, where N is a file descriptor. If there’s no file descriptor, then stdout is used, like in echo hello > new-file.
How do I redirect a command to discard the output?
In such cases, you can discard the output by redirecting it to the file /dev/null − Here command is the name of the command you want to execute. The file /dev/null is a special file that automatically discards all its input. To discard both output of a command and its error output, use standard redirection to redirect STDERR to STDOUT −