linux什么是回填指令,【Linux入门基础知识】一些常用的Linux基本命令

忘了不少东西，无奈写个Blog Backup:

Linux基本命令：

who查看当前user

ps aux (我经常多一个‘-’，有一行错误信息)

netstat (具体man or info to CC)

shutdown reboot关机命令

shutdown语法：

/sbin/shutdown[-t秒][-arkhncfF时间][警告信息]

eg:

/sbin/shutdown -h 10 'Server will be shutdowned after 10 mins'

man下的参数：

OPTIONS

-r Requests that the system be rebooted after it has been brought down.

-h Requests that the system be either halted or powered off after it has

been brought down, with the choice as to which left up to the system.

-H Requests that the system be halted after it has been brought down.

-P Requests that the system be powered off after it has been brought down.

-c Cancels a running shutdown. TIME is not specified with this option, the

first argument is MESSAGE.

-k Only send out the warning messages and disable logins, do not actually

bring the system down.

eg:

shutdown -h now/0

shutdown -h 10:00 /*10点关机

shutdown -h +10 10mins后关机

shutdown -r now (reboot at once)

shutdown -r +30 'System will reboot in 30mins'

shutdown -k 'System will reboot'(发送警告信息)

reboot命令

shutdown -r now几乎与reboot相同，关机之前输入回填指令：

sync;sync;sync;reboot

fsck - check and repair a Linux file system

fsck /dev/hda7:

To clear the wrong disk block of /dev/hda7 (单人单机模式root)。

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