nice(2) System Calls Manual nice(2) nice - (libc -lc) #include int nice(int inc); glibc ( feature_test_macros(7)): nice(): _XOPEN_SOURCE || /* glibc 2.19: */ _DEFAULT_SOURCE || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE nice() inc nice . ( nice .) nice +19 ( ) -20 ( ). nice . nice ( ). 2.6.12 nice RLIMIT_NICE getrlimit(2) . nice ( ). -1 errno . -1 . errno 0 nice() -1. EPERM inc . CAP_SYS_NICE. ( RLIMIT_NICE setrlimit(2).) C POSIX.1 nice() nice . 0 . nice() glibc 2.2.3 0 . glibc 2.2.4 nice() glibc POSIX.1 getpriority(2) nice . POSIX.1-2024. POSIX.1-2001 SVr4 4.3BSD. (nice value) sched(7). : " " 2.6.38 (nice) . sched(7). nice(1), renice(1), fork(2), getpriority(2), getrlimit(2), setpriority(2), capabilities(7), sched(7) 3 . . : . 6.18 8 2026 nice(2)