List the system calls used for process management:

System calls                Description

fork()                           To create a new process

exec()                          To execute a new program in a process

wait()                           To wait until a created process completes its execution

exit()                            To exit from a process execution

getpid()                       To get a process identifier of the current process

getppid()                     To get parent process identifier

nice()                           To bias the existing priority of a process

brk()                            To increase/decrease the data segment size of a process