Red Hat Enterprise Linux 5 Administration Unleashed

578loginssecure file transfers, 359-361server configuration, 356-357X11 forwarding, 364RHN, 80LogLevel directive (logging directives), 336logsaudit rule message logs, 513audit watch example, 515logvol command (kickstart), 37-38Logwatch, 419-421log_file option (auditd), 506log_format option (auditd), 507loops, Bash scripts, 245-246lsmod command, listing kernel modules, 157,163-164lsof command, reporting open files, 406lspci utility, listing PCI devices, 152-154lsusb utility, listing USB devices, 154-156LV (Logical Volumes), Linux installations, 27lvcreate commandcreating logical volume snapshots, 178logical volumes, creating/modifying in LVM,175-176lvdisplay command, viewing logicalvolumes, 177-178lvextend command, extending logical volumes,176-177LVM (Logical Volume Manager), 171adding, 173adding disk space, 172-173Linux installations, 25logical volumescreating, 175-176expanding filesystems, 177extending, 176-177removing from volume groups, 177viewing, 177-178partition schemes, 168-169physical volumes, creating, 173snapshots, 178-179system-config-lvm utility, 173tools list, 172volume groups, 174lvremove command, removing logical volumesfrom volume groups, 177lwres statements, named.conf files (BIND), 342Mmac match extension (IPTables), 486mail servers, configuringallowing email connections, 377-378/etc/aliases configuration file, 371/etc/mail directory, 370-371IMAP, 374-375logging Sendmail connections, 376-377POP, 374-375SSL encryption, 372-373starting/stopping server, 373/var/spool/mail, 372mailertable files (/etc/mail directory), 371mailstats commandcolumns of, 377displaying Sendmail stats, 376main server directives (Apache HTTP server),332-334makefiles, creating for RPM packages, 143man pages, 111managinggroupsadding group administrators, 213adding groups, 212-213adding/removing passwords, 214