In Linux, you can redirect error output (stderr) to a file using the following syntax:
command 2> file.txt
For example, to redirect error output from the ‘ls’ command to a file named ‘error.txt’, you would use the following command:
ls non-existent-directory 2> error.txt
In this example, the error message generated by the ‘ls’ command, indicating that the specified directory does not exist, is redirected to the ‘error.txt’ file instead of being displayed on the terminal.
You can also redirect both standard output (stdout) and error output to separate files using the following syntax:
command > stdout.txt 2> stderr.txt
In this example, standard output is redirected to the ‘stdout.txt’ file, and error output is redirected to the ‘stderr.txt’ file.
If you want to redirect both standard output and error output to the same file, you can use the following syntax:
command &> combined.txt
In this example, both standard output and error output are redirected to the ‘combined.txt’ file.