useradd [-u uid] [-g gid] [-G gid [, gid ,..]] [-d dir] [-m] [-s shell] [-c comment] loginname usermod userdel groupadd groupmod groupdel usermod [ -u uid [-o]] [-g group] [-G group [, group ...]] [-d dir] [-m] [-s shell] [-c comment] [-l newlogname] [-f inactive] [-e expire] login groupadd [-g gid [-o]] groupname groupmod [-g gid [-o]] [-n name] groupname loginID: password: lastchg: min: max: warn: inactive: expire 1. Created: / var / adm / loginlog failed to save the log. 2. Use the command finger who rusers to monitor the system. 4. Modify / etc / default / login to limit the root user login. 5. Id groups use to understand group members. 6. Use chown chgrp to change the file owner and group. 7. Learn setuid setgid access control list 8. 3 files to control through remote access: / etc / hosts.equiv $ HOME / .rhosts / etc / ftpusers
D-Sub + DVI + S-Video output interface combinations, the Ming Xin Horizon Wind 8600GTU-512D3TC Herd graphics card uses the popular D-Sub + DVI + S-Video interface combination to facilitate a lot are still using CRT old users. It is worth mentioning that, Ming-Xin Horizon Wind 8600GTU-512D3TC Herd Edition provides a three-year warranty, the first two years of free, one year after the price charged by component materials and services are in place. Edit Comment: Ming-Xin Horizon Wind 8600GTU-512D3TC Herd Edition by using the Turbocache technology to reduce the production cost of graphics cards, and return the user the best price is the most recent market value of 599 yuan a high-performance graphics card. Ming-Xin Horizon Wind 8600GTU-512D3TC Herd Edition Toms Hardware recently published a new card NV G92 GeForce 8800 GTs core real photos, and update some of the specifications. GeForce 8800 GT card with G92 P393 Companys 10-layer PCB board production, length and height, respectively 4.736,9.0-inch, single-card power demand for the 110W, the need for external 6-PIN PCI-E power. Occupies a single slot cooler graphics card is a positive Cooler Master TM69 products, heat pipe design with 3 ,4-PIN power, fan speed from 1000 RPM to 3200RPM adjustable, working noise is 34dB.