names case sensitivity in, 81, 92 for directories, 94 domain names, 295 FTP and filenames, 284–286 pathnames, 93–94, 96, 122 renaming directories, 100–101 renaming files, 83 renaming links to files, 129 rules for filenames, 81 terminal, 13 username, 14–15, 234–235, 291 wildcards for filenames, 109–111 xterm log files, 75 NetBSD UNIX, 5, 20–21 netiquette, 256, 348–349 Network File System (NFS), 237–241 Network icon, 4 networks. See also e-mail chatting over, 223–227 file transfer, 229 finding users, 220–223 Internet and, 229 Internet versus, 219 logging in over, 13–14 NFS (Network File System), 237–241 remote login, 229 running programs from remote computers, 191–194 Samba (UNIX/Windows), 241–242, 359 scp for remote copying, 235–236 searching for files on remote computers, 123 setting up, 229 ssh connection, 233–235 telnet connection, 230–233 troubleshooting, 307 UNIX version for, 24 X Window system and, 43–44 newsgroups (Usenet), 244, 355–357 NFS (Network File System), 237–241 NMH e-mail client, 260 No more processes message, 337–338 No process can be found message, 336 No space left on device message, 338 No such file or directory message, 96, 337 No such process message, 337 Not a directory message, 338 Novell UNIXWare, 21 nroff program, 142–143, 144, 150 numbers absolute permissions, 87–88 error messages, 341 FTP three-digit numbers, 284 line numbering by troff program, 145 for mouse buttons, 51, 53 printing page numbers, 140–141 sort program and, 108–109