// Execute program
execve(pathname, argv, envp);

// Exit all threads in a process
exit_group(status);

// Get group identity
getegid();

// Get user identity
getuid();
geteuid();

// Set/get group identity
setgid(gid);
getgid();

// Set user identity
setuid(uid);

// Set real and/or effective user or group ID
setreuid(ruid, euid);
setregid(rgid, egid);

// Set real, effective, and saved user or group ID
setresuid(ruid, euid, suid);
setresgid(rgid, egid, sgid);

// Get real, effective, and saved user/group ID
getresuid(ruid, euid, suid);
getresgid(rgid, egid, sgid);

// Get process identification
getpid();
getppid();

// Set and get a thread's CPU affinity mask
sched_setaffinity(pid, cpusetsize, mask);
sched_getaffinity(pid, cpusetsize, mask);

limit_resources = RLIMIT_AS | RLIMIT_CORE | RLIMIT_CPU | RLIMIT_DATA | RLIMIT_FSIZE |
                  RLIMIT_LOCKS | RLIMIT_MEMLOCK | RLIMIT_MSGQUEUE | RLIMIT_NICE |
                  RLIMIT_NOFILE | RLIMIT_NPROC | RLIMIT_RSS | RLIMIT_RTPRIO |
                  RLIMIT_RTTIME | RLIMIT_SIGPENDING | RLIMIT_STACK;

// Get or set resource limits
prlimit64(pid, resource = <limit_resources>, new_limit, old_limit);
getrlimit(resource = <limit_resources>, rlim);
setrlimit(resource = <limit_resources>, rlim);

// Yield the processor
sched_yield();

// Create a child process
fork();

// Terminate the calling process
exit(status);

// Set/get process group
setpgid(pid, pgid);
getpgid(pid);
getpgrp();

// Create a session and set the process group ID
setsid();

// Get session ID
getsid(pid);

// Get thread ID
gettid();

// Set user identity used for filesystem checks
setfsuid(fsuid);

// Set group identity used for filesystem checks
setfsgid(fsgid);

// Determine CPU and NUMA node on which the calling thread is running
getcpu(cpu, node);

// Get/set program scheduling priority
getpriority(which = PRIO_PROCESS | PRIO_PGRP | PRIO_USER, who);
setpriority(which = PRIO_PROCESS | PRIO_PGRP | PRIO_USER, who, prio);

sched_policies = SCHED_FIFO | SCHED_RR | SCHED_OTHER | SCHED_BATCH |
                 SCHED_IDLE | SCHED_DEADLINE;

// Get static priority range
sched_get_priority_max(policy = <sched_policies>);
sched_get_priority_min(policy = <sched_policies>);

// Get/set scheduling parameters
sched_setparam(pid, param);
sched_getparam(pid, param);

// Get scheduling policy
sched_getscheduler(pid);