R: Parent pid or parent process of a process

ps_ppid {ps} | R Documentation

## Parent pid or parent process of a process

### Description

`ps_ppid()` returns the parent pid, `ps_parent()` returns a `ps_handle` of the parent.

### Usage

    ps_ppid(p = ps_handle())

    ps_parent(p = ps_handle())

### Arguments

`p` | Process handle.

### Details

On POSIX systems, if the parent process terminates, another process (typically the pid 1 process) is marked as parent. `ps_ppid()` and `ps_parent()` will return this process then.

Both `ps_ppid()` and `ps_parent()` work for zombie processes.

### Value

`ps_ppid()` returns and integer scalar, the pid of the parent of `p`. `ps_parent()` returns a `ps_handle`.

### See Also

Other process handle functions: `ps_children()`, `ps_cmdline()`, `ps_connections()`, `ps_cpu_times()`, `ps_create_time()`, `ps_cwd()`, `ps_descent()`, `ps_environ()`, `ps_exe()`, `ps_handle()`, `ps_interrupt()`, `ps_is_running()`, `ps_kill()`, `ps_memory_info()`, `ps_name()`, `ps_num_fds()`, `ps_num_threads()`, `ps_open_files()`, `ps_pid()`, `ps_resume()`, `ps_send_signal()`, `ps_shared_libs()`, `ps_status()`, `ps_suspend()`, `ps_terminal()`, `ps_terminate()`, `ps_uids()`, `ps_username()`

### Examples

    p <- ps_handle()
    p
    ps_ppid(p)
    ps_parent(p)

[Package ps version 1.7.0 Index]