[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] d command (sed)  D command (sed)  daemon commands  daemons      NFS daemons      routing daemons      xinetd  DAO (disk-at-once) mode  date command      format  Date keyword (RCS)  dbm files      creating (makedbm)  dd command  deallocvt command  Debian Package Manager  2nd      commands      files  2nd      package flags      package priorities      package/selection states      shell and Perl scripts  debug command     ftp      GRUB  debugfs command  debugging tools     addr2line      gdb command      gprof      patch command      strace command  declare command (bash)  default command (tcsh)  del key  delete command     ex      ftp      gawk  dependencies  dependency files, creating  depmod command  .desktop files (KDE)  devdump command  device command (GRUB)  device images, displaying  devices     hard disks as      swapping, paging         disabling for (swapoff)          enabling for (swapon)  dextract variable (tcsh)  df command  dhcp command (GRUB)  diff command      CVS  diff3 command  dig command  dip command  dir command  [See also ls command]2nd      ftp  dircolors command  directories     creating (mdir)      displaying verbosely (vdir)      listing contents of         dir          ls  dirname command  [See also basename command]2nd  dirs command     bash      tcsh  dirsfile variable (tcsh)  dirstack variable (tcsh)  disconnect command (ftp)  disk buffers, flushing to disk (update)  disk space, measuring  disk usage, displaying     du      MS-DOS  disk-at-once (DAO) mode  disks     ext2 filesystem, formatting for      MS-DOS formatting         mformat          mkdosfs  disown command (bash)  DISPLAY environment variable (tcsh)  displayapm command (GRUB)  displaymem command (GRUB)  distributions  dmesg command  DNS (Domain Name Service)      servers, querying  dnsdomainname command  [See also hostname command]2nd  dnssec-keygen command  dnssec-makekeyset command  dnssec-signkey command  dnssec-signzone command  do command (gawk)  document formatting commands     groff      gs  documentation, accessing     info command      man command      manpath command      whatis command  dollar ($)      execut macro command, ftp      gawk      prompt      sed command  Domain Name Service (DNS)  domain names      researching (whois)  domainname command  2nd  domains  dosfsck command  2nd  [See also fsck command] dot (.)  double quotes (\\x22)  dpkg command (Debian)  2nd  dpkg-deb command (Debian)  2nd  dpkg-query command (Debian)  dpkg-split command (Debian)  drawer (GNOME)  dselect command (Debian)  2nd  dspmbyte variable (tcsh)  du command  dual booting      Linux and Windows NT/2000/XP  dump command (GRUB)  dumpe2fs command  dumpkeys command  dunique variable (tcsh)