entityMap|blocks|key|f9c0d|text|它要么由|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1b462|或者你可以读到|atg16|..。或者您可以使用|2bv5n|，不确定是谁设置的，以及它有多可靠。^0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|I|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|J|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|K|9|@]|A|@]|B|$]]|$2|G|4|H|6|7|8|L|9|@]|A|@]|B|$]]]]

It's either pointed to by the <code>argv[0]</code> or indeed you can read <code>/proc/self/status</code>. Or you can use <code>getenv("_")</code>, not sure who sets that and how reliable it is.

entityMap|blocks|key|9lqtb|text|如果你在使用glibc，那么：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|8ttgl|#define+_GNU_SOURCE
#include+

extern+char+*program_invocation_name;
extern+char+*program_invocation_short_name;|code-block|syntax|javascript|eo194|请参阅程序|6nvt9|_|8n88j|调用|cn7b7|40h1r|名称(3)|66ena|在大多数Unices下，|cevqd|也是由libc定义的。唯一可移植的方法是使用^0|0|0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|U|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|V|9|@]|A|@]|B|$F|G]]|$2|H|4|I|6|7|8|W|9|@]|A|@]|B|$]]|$2|J|4|K|6|7|8|X|9|@]|A|@]|B|$]]|$2|L|4|M|6|7|8|Y|9|@]|A|@]|B|$]]|$2|N|4|K|6|7|8|Z|9|@]|A|@]|B|$]]|$2|O|4|P|6|7|8|10|9|@]|A|@]|B|$]]|$2|Q|4|R|6|7|8|11|9|@]|A|@]|B|$]]|$2|S|4|T|6|7|8|12|9|@]|A|@]|B|$]]]]

If you're on using a glibc, then:

<pre><code>#define _GNU_SOURCE
#include &lt;errno.h&gt;

extern char *program_invocation_name;
extern char *program_invocation_short_name;
</code></pre>

See program_invocation_name(3)

Under most Unices, <code>__progname</code> is also defined by the libc.
The sole portable way is to use <code>argv[0]</code>

entityMap|blocks|key|e8rv1|text|您可以使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|23i14|..。然而，它并不比|bh45u|因为它可能存在可移植性问题。但由于您无法访问|eb93e|它的工作原理如下：|e7sa2|extern+char+*__progname;
printf("\n%25s",+__progname);|code-block|syntax|javascript^0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|N|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|O|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|P|9|@]|A|@]|B|$]]|$2|G|4|H|6|7|8|Q|9|@]|A|@]|B|$]]|$2|I|4|J|6|K|8|R|9|@]|A|@]|B|$L|M]]]]

You can use <code>__progname</code>. However it is not better than <code>argv[0]</code> as it may have portability issues. But as you do not have access to <code>argv[0]</code> it can work as follows:-

<pre><code>extern char *__progname;
printf("\n%s", __progname);
</code></pre>

entityMap|blocks|key|120av|text|我经常使用following，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|d0bdb|char*+currentprocname+=+getprogname();|code-block|syntax|javascript^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|H|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|I|9|@]|A|@]|B|$F|G]]]]

I often make use of following call,

<pre><code>char* currentprocname = getprogname();
</code></pre>

entityMap|blocks|key|b20sr|text|看看|type|unstyled|depth|inlineStyleRanges|entityRanges|data|bdgqf|，它被传递给|6d0bu|..。这应该是调用流程时所使用的名称。^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|G|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|H|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|I|9|@]|A|@]|B|$]]]]

Look at the value of <code>argv[0]</code> which was passed to <code>main</code>. This should be the name under which your process was invoked.

entityMap|blocks|key|51r4q|text|这是一个可以在macOS、FreeBSD和Linux上运行的版本。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5oirf|#if+defined(__APPLE__)+%7C%7C+defined(__FreeBSD__)
const+char+*+appname+=+getprogname();
#elif+defined(_GNU_SOURCE)
const+char+*+appname+=+program_invocation_name;
#else
const+char+*+appname+=+"?";
#endif|code-block|syntax|javascript^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|H|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|I|9|@]|A|@]|B|$F|G]]]]

This is a version that works on macOS, FreeBSD and Linux.

<pre><code>#if defined(__APPLE__) || defined(__FreeBSD__)
const char * appname = getprogname();
#elif defined(_GNU_SOURCE)
const char * appname = program_invocation_name;
#else
const char * appname = "?";
#endif
</code></pre>

entityMap|blocks|key|aggcp|text|如果您因为实现了一个库而无法在main()中访问argv[]，那么您可以看看我对类似问题的回答|type|unstyled|depth|inlineStyleRanges|entityRanges|data|8jsao|这里|6dtt9|..。|5gqmi|它基本上可以归结为让你在main()之外访问argc、argv[]和envp[]。然后，您可以像其他人已经正确建议的那样，使用argv|31l5q|若要检索进程名称，请执行以下操作。^0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|K|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|L|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|M|9|@]|A|@]|B|$]]|$2|G|4|H|6|7|8|N|9|@]|A|@]|B|$]]|$2|I|4|J|6|7|8|O|9|@]|A|@]|B|$]]]]

If you cannot access argv[] in main(), because you are implementing a library, you can have a look at my answer on a similar question <a href="https://stackoverflow.com/questions/2471553/access-command-line-arguments-without-using-char-argv-in-main/24718544#24718544">here</a>.

It basically boils down into giving you access to argc, argv[] and envp[] outside of main().
Then you could, as others have already correctly suggested, use argv[0] to retrieve the process name.

entityMap|blocks|key|8c7kh|text|对于后代来说，这是一个更像C%2B%2B的版本，也可以在MSVC上运行：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|6imr3|https://godbolt.org/z/sh3TnM|f30ml|#define+FMT_HEADER_ONLY
#include+

std::string+get_current_process_name()
{
++++#if+defined(__APPLE__)+%7C%7C+defined(__FreeBSD__)
++++++++return+getprogname();
++++#elif+defined(_GNU_SOURCE)
++++++++return+program_invocation_name;
++++#elif+defined(_WIN32)
++++++++return+__argv[0];
++++#else
++++++++return+"?";
++++#endif
}

int+main()
{
++++fmt::print("whatsmyname:+{}\n",+get_current_process_name());
++++return+0;
}

//+msvc+output:
//+whatsmyname:+C:\Users\\source\repos\Project6\Debug\Project6.exe|code-block|syntax|javascript^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|J|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|K|9|@]|A|@]|B|$]]|$2|E|4|F|6|G|8|L|9|@]|A|@]|B|$H|I]]]]

for posterity, a version that's more C++-ish and works also on MSVC:
<a href="https://godbolt.org/z/sh3TnM" rel="nofollow noreferrer">https://godbolt.org/z/sh3TnM</a>
<pre><code>#define FMT_HEADER_ONLY
#include &lt;fmt/format.h&gt;

std::string get_current_process_name()
{
 #if defined(__APPLE__) || defined(__FreeBSD__)
 return getprogname();
 #elif defined(_GNU_SOURCE)
 return program_invocation_name;
 #elif defined(_WIN32)
 return __argv[0];
 #else
 return &quot;?&quot;;
 #endif
}

int main()
{
 fmt::print(&quot;whatsmyname: {}\n&quot;, get_current_process_name());
 return 0;
}

// msvc output:
// whatsmyname: C:\Users\&lt;user&gt;\source\repos\Project6\Debug\Project6.exe
</code></pre>

How can I get the process name in C? The same name, which is in <code>/proc/$pid/status</code>. I do not want to parse that file. Is there any programmatic way of doing this?

How to get current process name in linux?

FreeBSD

Linux

 如何在C中获取进程名称？相同的名称，该名称在 ..。我不想解析那个文件。有没有什么程序化的方法可以做到这一点？

问如何在linux中获取当前进程名？
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