Linux下获取程序绝对路径（全路径）的方法

Linux下获取程序绝对路径（全路径）的方法

直接上源代码：

#include <stdio.h>
#include <unistd.h>

#define MAXL_PATH 1024

/**
* NAME: getAbsopath
* DESC: 获取程序的绝对路径
* REMK: Absopath - Absolute path
*/
char* getAbsopath()
{
    static char buf[MAXL_PATH];
	
	int i;
    int len = readlink("/proc/self/exe", buf, MAXL_PATH);
	
    if (len < 0 || len >= MAXL_PATH)
    {
        return NULL;
    }
	
    buf[len] = '
 
 
Linux下获取程序绝对路径（全路径）的方法
 
 
直接上源代码：
 
 
 
 
#include <stdio.h>
#include <unistd.h>

#define MAXL_PATH 1024

/**
* NAME: getAbsopath
* DESC: 获取程序的绝对路径
* REMK: Absopath - Absolute path
*/
char* getAbsopath()
{
    static char buf[MAXL_PATH];
	
	int i;
    int len = readlink("/proc/self/exe", buf, MAXL_PATH);
	
    if (len < 0 || len >= MAXL_PATH)
    {
        return NULL;
    }
	
    buf[len] = '\0';
    for (i = len; i >= 0; i--)
    {
        if (buf[i] == '/')
        {
            buf[i + 1] = '\0';
            break;
        }
    }
    return buf;
}

int main(int argc, char** argv)
{
    printf("%s\n", getAbsopath());
    return 0;
}
 
 

 改进的做法： 
 
 
 
 
 
#include <stdio.h>
#include <unistd.h>

/**
* NAME: getAbsopath
* DESC: 获取程序的绝对路径
* REMK: Absopath - Absolute path
*/
char* getAbsopath(char* buf, const int size)
{
    int i;
    int len = readlink("/proc/self/exe", buf, size - 1);
	
    if (len < 0 || (len >= size - 1))
    {
        return NULL;
    }
	
    buf[len] = '\0';
    for (i = len; i >= 0; i--)
    {
        if (buf[i] == '/')
        {
            buf[i + 1] = '\0';
            break;
        }
    }
    return buf;
}

int main(int argc, char** argv)
{
    char path[1024];
    printf("%s\n", getAbsopath(path, 1024));
    return 0;
}
 
  
  
 
 
 
 
 
 
 

 

';
    for (i = len; i >= 0; i--)
    {
        if (buf[i] == '/')
        {
            buf[i + 1] = '
 
 
Linux下获取程序绝对路径（全路径）的方法
 
 
直接上源代码：
 
 
 
 
#include <stdio.h>
#include <unistd.h>

#define MAXL_PATH 1024

/**
* NAME: getAbsopath
* DESC: 获取程序的绝对路径
* REMK: Absopath - Absolute path
*/
char* getAbsopath()
{
    static char buf[MAXL_PATH];
	
	int i;
    int len = readlink("/proc/self/exe", buf, MAXL_PATH);
	
    if (len < 0 || len >= MAXL_PATH)
    {
        return NULL;
    }
	
    buf[len] = '\0';
    for (i = len; i >= 0; i--)
    {
        if (buf[i] == '/')
        {
            buf[i + 1] = '\0';
            break;
        }
    }
    return buf;
}

int main(int argc, char** argv)
{
    printf("%s\n", getAbsopath());
    return 0;
}
 
 

 改进的做法： 
 
 
 
 
 
#include <stdio.h>
#include <unistd.h>

/**
* NAME: getAbsopath
* DESC: 获取程序的绝对路径
* REMK: Absopath - Absolute path
*/
char* getAbsopath(char* buf, const int size)
{
    int i;
    int len = readlink("/proc/self/exe", buf, size - 1);
	
    if (len < 0 || (len >= size - 1))
    {
        return NULL;
    }
	
    buf[len] = '\0';
    for (i = len; i >= 0; i--)
    {
        if (buf[i] == '/')
        {
            buf[i + 1] = '\0';
            break;
        }
    }
    return buf;
}

int main(int argc, char** argv)
{
    char path[1024];
    printf("%s\n", getAbsopath(path, 1024));
    return 0;
}
 
  
  
 
 
 
 
 
 
 

 

';
            break;
        }
    }
    return buf;
}

int main(int argc, char** argv)
{
    printf("%s\n", getAbsopath());
    return 0;
}
#include