[英]how to open a file in user's home folder
我想在linux上的用户主目录中放置一种锁文件(来自c ++),但fopen'ing~ / .fluudit似乎不起作用。
fopen("~/.fluudit","w"); //fails
You can use the environment variable HOME
and if that's not present, you can use the password database: 您可以使用环境变量
HOME
,如果不存在,则可以使用密码数据库:
#include <unistd.h>
#include <sys/types.h>
#include <pwd.h>
struct passwd *pw = getpwuid(getuid());
const char *homedir = pw->pw_dir;
The expansion of ~
to, say, getenv("HOME")
is called globbing and is something you need to do first. ~
比如getenv("HOME")
的扩展称为globbing,是你需要先做的事情。 You didn't say which libaries or frameworks you are using, but some provide this. 您没有说明您使用的是哪些库或框架,但有些提供此功能。
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