Linux下的监测系统程序运行的软件有很多，像system moniter，top等。对于CLI控来说，系统自带的top命令就是一个很不错的系统监测程序。我也一直用top命令查看系统进程，不过偶然发现的htop却让我眼前一亮。htop相当于top的增强版本，如图：

在很多方面，htop比top显示的更加人性化，也可以按F1查看更多命令选项。如图：

需要注意的是，htop的F1命令可能和某些终端，比如gnome-terminal，konsole等的帮助相冲突，这样的话就更改改终端的快捷键或者使用xterm，urxvt等轻量级的终端。

下面是htop官方网站给出的htop与top的一些比较:

• In 'htop' you can scroll the list vertically and horizontally to see all processes and complete command lines.
• In 'top' you are subject to a delay for each unassigned key you press (especially annoying when multi-key escape sequences are triggered by accident).
• 'htop' starts faster ('top' seems to collect data for a while before displaying anything).
• In 'htop' you don't need to type the process number to kill a process, in 'top' you do.
• In 'htop' you don't need to type the process number or the priority value to renice a process, in 'top' you do.
• 'htop' supports mouse operation, 'top' doesn't.
• 'top' is older, hence, more used and tested.

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