Download “ How Linux Works (2nd Edition) ” Free PDF – from The Given link below!
Hello everyone, today in this post we are going to share the direct link of “ How Linux Works (2nd Edition) PDF”. All of you can easily download this “ How Linux Works (2nd Edition) PDF in your phone or laptop with the help of the direct download link given at the end of the post.
How Linux Works (2nd Edition) ”PDF Deatils
|PDF Title:||How Linux Works|
|Book Varient:||2nd Edition|
|Total Page:||338 Pages|
|PDF Size:||2.8 MB|
How Linux Works (2nd Edition) – Book
The number one cause of all shared library problems is the environment variable named LD_LIBRARY_PATH. Setting this variable to a colon-delimited set of directory names makes ld.so search the given directories before anything else when looking for a shared library. This is a cheap way to make programs work when you move a library around, if you don’t have the program’s source code and can’t use patchelf, or if you’re just too lazy to recompile the executables. Unfortunately, you get what you pay for.
Never set LD_LIBRARY_PATH in shell startup files or when compiling software. When the dynamic runtime linker encounters this variable, it must often search through the entire contents of each specified directory more times than you’d care to know. This causes a big performance hit, but more importantly, you can get conflicts and mismatched libraries because the runtime linker looks in these directories for every program.
If you must use LD_LIBRARY_PATH to run some crummy program for which you don’t have the source (or an application that you’d rather not compile, like Mozilla or some other beast), use a wrapper script. Let’s say your executable is /opt/crummy/bin/crummy.bin and needs some shared libraries in /opt/crummy/lib. Write a wrapper script called crummy.