DevOps

# Linux operation

## owner wrapper

如果需要征用其他人权限，移交文件所属权

Wrapper script

```

g++ getid.cpp -O3 -o br_pc_wrapper

chmod +s br_pc_wrapper

```

Wrapper code

```

#include <unistd.h>

#include <sys/types.h>

#include <stdio.h>

#include <stdlib.h>

#include <cstring>

real_uid = getuid();

effective_uid = getuid();

seteuid(4219);

setuid(4219);

setreuid(4249, 4249);

system(argv[1]);

```