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--- linux_wiki:library_paths [2016/02/05 11:39]
billdozor [Library Search Order]
+++ linux_wiki:library_paths [2019/05/25 23:50] (current)
@@ Line 6: / Line 6: @@
 **Checklist**
-  * Distro: Enterprise Linux 6/7
+  * Distro(s): Enterprise Linux 6/7
 ----
@@ Line 32: / Line 32: @@
 </code>
   * -v => verbose
+\\
+Print the Cache Contents: To see what is currently in the library cache<code bash>ldconfig --print-cache</code>
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@@ Line 41: / Line 44: @@
   * (ELF binaries only) => Directories specified within the binary. (DT_RUNPATH)
   * From cache file (/etc/ld.so.cache) => created via ldconfig
-  * In default system library paths (/lib, /usr/lib)
+  * In default system library paths (/lib, /lib64, /usr/lib)
+====== Override Search Order ======
+To get a path specified in front of another, define the environmental variable "LD_LIBRARY_PATH" in a configuration file (per user or system wide).
+\\
+Example: Ensure that /usr/lib64 is ahead of /usr/local/lib for user "robert"
+<code bash>
+vim /home/robert/.bashrc
+LD_LIBRARY_PATH=/usr/lib64:${LD_LIBRARY_PATH}
+</code>
+  * Including the "${LD_LIBRARY_PATH}" as a second entry ensures that nothing is completely over written if the variable has been set elsewhere
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