Linux系统调用execve中的"ve"缩写具体含义是什么？

Solid question—those classic UNIX system call names are full of shorthand that doesn't always make it into the man pages, so it's totally reasonable to wonder about this.

Let's break down the name:

• exec: Short for "execute"—the core job of all functions in this family, which replaces the current process's code and data with a new program.
• v: Stands for vector—this refers to how command-line arguments are passed to the function: as a null-terminated array (a "vector" of strings, char *argv[]), instead of separate, comma-separated arguments.
• e: Stands for environment—unlike simpler variants like execv, execve lets you explicitly pass a custom environment variable array (char *envp[]) to the new program.

To make this clearer, compare it to other members of the exec family:

• execl: exec + list (arguments passed as individual, comma-separated values)
• execv: exec + vector (arguments passed as an array)
• execle: exec + list + environment (list arguments + custom environment)
• execve: exec + vector + environment (array arguments + custom environment)

Your hunch about "vector" was exactly right—you were halfway there! The "e" adds the environment variable layer that makes this the most flexible (and lowest-level) of the standard exec calls.

内容的提问来源于stack exchange，提问作者Elijah Lynn