Character print file can be printed - Linux Command strings

strings

Print file printable string (print the strings of printable characters in files). Used to search for a string in a binary file, used in conjunction with grep. String length strings command output four or more, or 4, the string no longer than 4 will not be printed, we can -n parameter adjustment, strings -n 2 filename.

Print file printable characters. This file can be a text file (test.c), executable files (test), dynamic link libraries (test.o), static link library (test.a).

Reference: https://blog.csdn.net/stpeace/article/details/46641069

for example

/// @file tmp.cc
#include <cstdio>

namespace zhaolu
{
	int hello = 1;
	int world = 2;
}

void hello_world()
{
	printf("%d\n",zhaolu::hello);
}

int main()
{
	int hello;
	printf("hello world");
	return 0;
}

Use strings:

:strings tmp.cc
#include <cstdio>
namespace zhaolu
int hello = 1;
int world = 2;
void hello_world()
printf("%d\n",zhaolu::hello);
int main()
int hello;
printf("hello world");
return 0;
:strings tmp.cc | grep hello
int hello = 1;
void hello_world()
printf("%d\n",zhaolu::hello);
int hello;
printf("hello world");

Generate an object file:

:gcc -c -o tmp.o tmp.cc

Check with strings:

:strings tmp.o
hello world