bash-xtracefd

The blog details using `BASH_XTRACEFD` with `set -x` in Bash for cleaner debugging by redirecting output to a custom file descriptor, thus keeping script outputs clear. By setting up a designated file descriptor, debugging information is separated from standard outputs, enhancing readability and maintenance of complex scripts.

The blog discusses using the `BASH_XTRACEFD` environment variable in Bash to isolate and profile script execution times. By directing execution traces to a separate file descriptor with `set -x`, and appending timestamps via `PS4`, the process facilitates detailed analysis of script performance, enhancing debugging and optimization.