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libssh2.org 示例: http ://www.libssh2.org/examples/ssh2_exec.html
有一行:char buffer[0x4000];
这条线在做什么?
该代码分配了一个 16KiB 的缓冲区。0x4000十六进制表示 4000,十进制表示 16384。
0x4000