Created: 2022-07-20
Tags: #fleeting
file
ldd <filename>
What does the Command Do
Running it against a dynamically linked binary shows all its dependent libraries and their paths.
What does "dynamically linked" mean in the output of file?
When software is being developed, we try not to reinvent the wheel.
There are a set of common tasks that most software programs require, like printing output or reading from standard in, or opening files, etc.
All of these common tasks are abstracted away in a set of common functions that everybody can then use instead of writing their own variants.
These common functions are put in a library called libc or glibc.
How does one find which libraries the executable is dependent on?
That’s where ldd command comes into the picture.
Running it against a dynamically linked binary shows all its dependent libraries and their paths.
Hexdump
Display file contents in ASCII, decimal, hexadecimal, or octal.