T

-t option mount command, 126 tar utility, 133 Tablet interface, 53 tac command, 78 tags cache directory, 482-483 cache setting, 481 generic, 485 log file, 482-483 network, 481

performance-related, 483-484 Squid, 480 timeout, 484 tail command, 78

tar (tape archiver) utility, 132-135 basics of, 132-134 compressing archives, 134-135 copying directories using, 133 vs. cp, 133

extracting backups, 133 incremental backups with, 134 using as backup utility, 134 tar archives, looking at contents of, 133 targets, for rules, 587 TCP port forwarding, with SSH, 377-379 TCP Wrappers, 577 hosts.allow file, 390 hosts.deny file, 390 keywords, 390-391 tuning access to services, 390-392 when not to use, 392 tcpdump tool, 261-262 tcsh shell, 73, 93 telnet, 369, 384 temporary files, 37 terminal window, 43 test command, 507, 518 Test Internet Connection screen, 20 text cutting, copying, pasting, 83 deleting, 83

removing from file, 524 text editors, 82-83 text files, viewing, 78 Text Mode installation, 5 text substitutions, 524 text-based virtual consoles, 30-31 TFTP server, 65, 653-655 time synchronization checking status of, 398-399 drift factor and, 396-397 with NTP, 393-400 setting intervals for, 396 time zone selection, 9 Time Zone setting, 14 timeout settings, Squid, 484 /tmp directory, 37 Tools menu, 44 top command, 211-212, 527 top utility, 205-208 top-level domains (TLDs), 439 touch command, 78 touch newfile command, 112 traceroute command, 249, 254-255 Transport Layer Security (TLS), 401 transport lookup table, 329, 331 trivial rewrite daemon, 320-321 troubleshooting, 631

application availability, 634-635 from GRUB boot prompt, 636-638 logging, 635-636 networks, 631-634

problem analysis, 631-636 Repair Installed System option, 640-645 with rescue system, 638-640 troubleshooting module, 8 trusted roots, 402 tune2fs utility, 140

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