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optimization techniques-profile-a-scripts-execution-time-with-bash

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March 2025

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Profile a script’s execution time with `BASH_XTRACEFD`

bash_xtracefd script profiling linux bash execution time optimization techniques

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.

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