[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] a command (sed)  abbrev command (ex)  account command (ftp)  aclocal command  ACPI (Advanced Configuration and Power Interface)  Ada programming language, compiling  add command (CVS)  addr2line command  address command (ex)  Address Resolution Protocol  [See ARP] addresses (sed)  addsuffix variable (tcsh)  AddToMenu variable (fvwm2)  admin command (CVS)  2nd  Advanced Package Tool (APT)  Advanced Power Management  [See APM] AFSUSER environment variable (tcsh)  afsuser variable (tcsh)  agetty command  alias command     bash      tcsh  alloc command (tcsh)  Alt-F1 through F12  Alt-F7  Alt-key (Emacs)  ampersand (&)      ex command  2nd      logical AND  ampm variable (tcsh)  and command (gawk)  angle brackets (< >) command (ex)  annotate command (CVS)  ANSI/VT100 terminal emulation, enabling (screen)  Apache, user authentication files, updating (htdigest)  APM (Advanced Power Management)     BIOS driver      BIOS information, displaying (GRUB)      KDE  apmd command  append command     ex      ftp  applets  apropos command  APT (Advanced Package Tool)  apt command  apt-cdrom command (Debian)  apt-config command (Debian)  apt-extracttemplates command (Debian)  apt-ftparchive command (Debian)  apt-get command (Debian)  2nd  apt-sortpkgs command (Debian)  ar command  arbitrary-precision arithmetic, performing with bc  arch command  archives      copying      creating (shar)      creating and restoring (tar)      in CVS      maintenance (ar)  args command (ex)  argv variable (tcsh)  arithmetic operators (expr)  ARP (Address Resolution Protocol)  2nd  3rd  4th  [See also RARP]     ifconfig and  arp command  as command  ascii command (ftp)  asort command (gawk)  ASs (autonomous systems)  assembly language, generation of object files  asterisk (*)  2nd      multiplication operator  at (@) command     ex      tcsh  at command  atan2 command (gawk)  atd command  atq command  atrm command  audio media commands  audiosend command  Author keyword (RCS)  autoconf command  2nd  [See also autoheader command]     aclocal command and  autocorrect variable (tcsh)  autoexpand variable (tcsh)  autoheader command  autolist variable (tcsh)  autologout variable (tcsh)  automake command  autonomous systems (ASs)  autoreconf command  autoscan command  autoupdate command  awk scripting language  [See gawk scripting language]