Frequently used commands

1. To find a file in current directory

find . -name "something.h"

2. To find a file (in current directory) with some text in it

grep "sometext" . -wrn

-r is for recursive; -n is to print the line numbers; -w for "whole" words only

3. To find the dependencies of an exe on .so files
ldd exe-name

4. To remove the debug symbols from an exe

strip --strip-debug or

strip -g or

strip - d

6. To list down exported symbols from kernel

cat /proc/kallsyms | grep "__ksymtab_proc_root"

NOTE: "__ksymtab" prefixed symbols are the symbols exported from the kernel.

7. To install from the spec file
rpm -ba "spec"

8. To find the distribution of the Linux (11.1 or 10.2 or 10.3), use

lsb_release -a

NOTE: lsb stands for Linux Standard Base


9. To find the size of the files (in friendly format) in a directory, go inside that directory
du -ch *