...penat() [Added in POSIX.1-2008] pause() poll() pread() pselect() pthread_cond_timedwait() pthread_cond_wait() pthread_join() pthread_testcancel() putmsg() putpmsg() pwrite() rea…overview of signals NAME signal - overview of signals DESCRIPTION Linux supports both POSIX reliable signals (hereinafter "standard signals") and POSIX real-time signals. Signal di…...ead_cond_destroy () pthread_cond_init () pthread_cond_signal () pthread_cond_timedwait () pthread_cond_wait () pthread_condattr_destroy () pthread_condattr_init () pthread_creat…fast user-space locking NAME futex - fast user-space locking SYNOPSIS #include <linux/futex.h> DESCRIPTION The Linux kernel provides futexes ("Fast user-space mutexes") as a buildi…show the execution plan of a statement NAME EXPLAIN - show the execution plan of a statement SYNOPSIS EXPLAIN [ ( option [, ...] ) ] statement where option can be one of: ANALYZE […async-signal-safe functions NAME signal-safety - async-signal-safe functions DESCRIPTION An async-signal-safe function is one that can be safely called from within a signal handler…Native POSIX Threads Library NAME nptl - Native POSIX Threads Library DESCRIPTION NPTL (Native POSIX Threads Library) is the GNU C library POSIX threads implementation that is used…overview of POSIX semaphores NAME sem_overview - overview of POSIX semaphores DESCRIPTION POSIX semaphores allow processes and threads to synchronize their actions. A semaphore is …I/O event notification facility NAME epoll - I/O event notification facility SYNOPSIS #include <sys/epoll.h> DESCRIPTION The epoll API performs a similar task to poll (2): monitori…overview of CPU scheduling NAME sched - overview of CPU scheduling DESCRIPTION Since Linux 2.6.23, the default scheduler is CFS, the "Completely Fair Scheduler". The CFS scheduler …lock a table NAME LOCK - lock a table SYNOPSIS LOCK [ TABLE ] [ ONLY ] name [ * ] [, ...] [ IN lockmode MODE ] [ NOWAIT ] where lockmode is one of: ACCESS SHARE | ROW SHARE | ROW E…TCP protocol NAME tcp - TCP protocol SYNOPSIS #include <sys/socket.h> #include <netinet/in.h> #include <netinet/tcp.h> tcp_socket = socket(AF_INET, SOCK_STREAM, 0); DESCRIPTION Thi…process identifiers NAME credentials - process identifiers DESCRIPTION Process ID (PID) Each process has a unique nonnegative integer identifier that is assigned when the process i…overview of Linux user namespaces NAME user_namespaces - overview of Linux user namespaces DESCRIPTION For an overview of namespaces, see namespaces (7). User namespaces isolate se…sockets for local interprocess communication NAME unix - sockets for local interprocess communication SYNOPSIS #include <sys/socket.h> #include <sys/un.h> unix_socket = socket(AF_U…bash built-in commands, see bash (1) NAME bash-builtins - bash built-in commands, see bash (1) SYNOPSIS bash defines the following built-in commands: :, ., [, alias, bg, bind, brea…bash built-in commands, see bash (1) NAME bash-builtins - bash built-in commands, see bash (1) SYNOPSIS bash defines the following built-in commands: :, ., [, alias, bg, bind, brea…rebuild indexes NAME REINDEX - rebuild indexes SYNOPSIS REINDEX [ ( option [, ...] ) ] { INDEX | TABLE | SCHEMA } [ CONCURRENTLY ] name REINDEX [ ( option [, ...] ) ] { DATABASE | …collect statistics about a database NAME ANALYZE - collect statistics about a database SYNOPSIS ANALYZE [ ( option [, ...] ) ] [ table_and_columns [, ...] ] where option can be one…garbage-collect and optionally analyze a database NAME VACUUM - garbage-collect and optionally analyze a database SYNOPSIS VACUUM [ ( option [, ...] ) ] [ table_and_columns [, ...]…