Linux Bash

environment variable

All posts tagged environment variable by Linux Bash

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March 2025

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Launch a process with a custom LD_PRELOAD without modifying the environment

ld_preload linux custom libraries environment variable security risks

This guide details using the `LD_PRELOAD` environment variable in Linux to temporarily load custom libraries for a single process execution, thereby altering program behavior without global environmental effects. It emphasizes security risks involved and demonstrates with examples how `LD_PRELOAD` can intercept, modify functions, and system calls.

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