allexiusw · November 15, 2019 21:56
diff --git a/poc_shared_libraries.sh b/poc_shared_libraries.sh
 nano sqrttest.c
  /* sqrttest.c */
  #include <math.h>
  #include <stdio.h>
  int main(void)
  {
    printf("%g\n", sin(3.141592654/2.0));
    return 0;
  }
 #save the script

 #Now compile it without shared libraries
 gcc -static sqrttest.c -lm -o sqrttest-static

 #run the binary
 ./sqrttest-static

 #check the size of static binary
 ls -lh sqrttest-static

 #Compile the program with shared libraries
 gcc sqrttest.c -lm -o sqrttest-dynamic

 #run the binary
 ./sqrttest-dynamic

 #check the size of binary with dynamic libraries
 ls -lh sqrttest-dynamic

 #Let's conclude that Shared Libraries are very important thing
 #in optimize an application and manage code efficiently.

 #check shared libraries used by a binary
 ldd sqrttest-dynamic
 ldd sqrttest-static

 #end of poc
	nano sqrttest.c
	/* sqrttest.c */
	#include <math.h>
	#include <stdio.h>
	int main(void)
	{
	printf("%g\n", sin(3.141592654/2.0));
	return 0;
	}
	#save the script

	#Now compile it without shared libraries
	gcc -static sqrttest.c -lm -o sqrttest-static

	#run the binary
	./sqrttest-static

	#check the size of static binary
	ls -lh sqrttest-static

	#Compile the program with shared libraries
	gcc sqrttest.c -lm -o sqrttest-dynamic

	#run the binary
	./sqrttest-dynamic

	#check the size of binary with dynamic libraries
	ls -lh sqrttest-dynamic

	#Let's conclude that Shared Libraries are very important thing
	#in optimize an application and manage code efficiently.

	#check shared libraries used by a binary
	ldd sqrttest-dynamic
	ldd sqrttest-static

	#end of poc