Linux error while loading shared libraries: cannot open shared object file: No such file or directory

Question

Your library is a dynamic library.
You need to tell the operating system where it can locate it at runtime.

To do so,
we will need to do those easy steps:

Find where the library is placed if you don’t know it.
```
sudo find / -name the_name_of_the_file.so
```
Check for the existence of the dynamic library path environment variable(LD_LIBRARY_PATH)
```
echo $LD_LIBRARY_PATH
```
If there is nothing to be displayed, add a default path value (or not if you wish to)
```
LD_LIBRARY_PATH=/usr/local/lib
```
We add the desired path, export it and try the application.

Note that the path should be the directory where the path.so.something is. So if path.so.something is in /my_library/path.so.something, it should be:
```
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/my_library/
export LD_LIBRARY_PATH
./my_app
```

Reference to source