\initial {/}
\entry {\file {/etc/nsswitch.conf}}{502}
\initial {{\_}}
\entry {_POSIX_OPTION_ORDER environment variable.}{462}
\initial {4}
\entry {4.\var {n} BSD Unix}{3}
\initial {A}
\entry {abort signal}{398}
\entry {aborting a program}{465}
\entry {absolute file name}{88}
\entry {absolute value functions}{306}
\entry {accepting connections}{248}
\entry {access permission for a file}{204}
\entry {access, testing for}{206}
\entry {accessing directories}{183}
\entry {address of socket}{223}
\entry {alarm signal}{401}
\entry {alarms, setting}{356}
\entry {alignment (in obstacks)}{52}
\entry {alignment (with \code {malloc})}{37}
\entry {\code {alloca} disadvantages}{57}
\entry {\code {alloca} function}{55}
\entry {allocation (obstacks)}{45}
\entry {allocation hooks, for \code {malloc}}{40}
\entry {allocation of memory with \code {malloc}}{32}
\entry {allocation size of string}{66}
\entry {allocation statistics}{41}
\entry {alphabetic character}{61}
\entry {alphanumeric character}{62}
\entry {append-access files}{87}
\entry {argc (program argument count)}{447}
\entry {arguments (variadic functions)}{556}
\entry {arguments, how many}{557}
\entry {arguments, to program}{447}
\entry {argv (program argument vector)}{447}
\entry {arithmetic expansion}{334}
\entry {array comparison functions}{72}
\entry {array copy functions}{67}
\entry {array search function}{317}
\entry {array sort function}{318}
\entry {ASCII character}{62}
\entry {assertions}{553}
\entry {attributes of a file}{195}
\entry {automatic allocation}{31}
\entry {automatic freeing}{55}
\entry {automatic storage with variable size}{55}
\initial {B}
\entry {background job}{480}
\entry {background job, launching}{491}
\entry {basic byte sequence}{368}
\entry {baud rate}{284}
\entry {Berkeley Unix}{3}
\entry {big-endian}{239}
\entry {binary I/O to a stream}{104}
\entry {binary search function (for arrays)}{317}
\entry {binary stream}{136}
\entry {binding a socket address}{223}
\entry {blank character}{62}
\entry {block I/O to a stream}{104}
\entry {blocked signals}{394}
\entry {blocked signals, checking for}{437}
\entry {blocking signals}{431}
\entry {blocking signals, in a handler}{435}
\entry {bootstrapping, and services}{504}
\entry {break condition, detecting}{278}
\entry {break condition, generating}{293}
\entry {breaking a string into tokens}{80}
\entry {broken pipe signal}{404}
\entry {broken-down time}{341, 345}
\entry {BSD compatibility library}{498}
\entry {BSD compatibility library.}{9}
\entry {BSD Unix}{3}
\entry {buffering of streams}{140}
\entry {buffering, controlling}{142}
\entry {bus error}{398}
\entry {byte order conversion, for socket}{239}
\entry {byte stream}{221