POSIX C POSIX library Microsoft POSIX subsystem Pthreads P.I.P.S. Native POSIX Thread Library ISO/IEC 15897 Read (system call) POSIX terminal interface Berkeley sockets Signal (IPC) List of POSIX commands Unix shell Single UNIX Specification Regular expression DCEThreads Unistd.h SIGHUP Linux kernel interfaces Unix time Getopt Tar (computing) Austin Group Bc (programming language) Spawn (computing) Close (system call) Episode filesystem Unix domain socket Java Native Access Access-control list Fork (system call) GNU Portable Threads Locale (computer software) LinuxThreads Cygwin Cpio Write (system call) Capability-based security Pax (command) Richacls Unix file types Unicon (programming language) EMX (programming envir…

ronment) Exec (system call) Shared memory Cksum Type (Unix) Rename (computing) Stat (system call) Memory-disk synchronization Mailx Almquist shell XtreemFS Fiwix PX5 RTOS Robotfindskitten DNA-OS Dot (command) Getopts Musl Symbolic link File-system permissions Temporary file Pwd Unix-like TMPDIR ObjectiveFS Ne (text editor) Terminal capabilities Freedup LDAP Admin Qshell File locking Mmap Overlapped I/O Mail (Unix) Bourne shell System V Interface De

finition Sbrk Process group C standard library List of emulators Errno.h Sleep (system call) UWIN Moose File System Portable character set Printf (Unix) RTLinux Environmental subsystem Process Environment Block Open-system environment reference model List of C++ multi-threading libraries Shell script Direct.h Common Locale Data Repository OCFS2 Fish (Unix shell) Message queue Glob (programming) LynxOS Sbase Scientific Research Institute of System Development Poll (Unix) Symlink race Programming model Dynamic loading Lennart Poettering Broken pipe DirectNET Protocol Allied Standards Avionics Architecture Council Gettext Command (Unix) Transport Layer Interface Seventh Edition Unix terminal interface Unix wars User identifi