Glances is a command-line system monitoring tool designed to collect system information, enabling the monitoring of metrics such as load, CPU, network, memory, disk, processes, and more. This guide is based on a Linux cloud server and provides instructions on the installation and usage of the Glances tool.

For Ubuntu or Debian operating systems, the installation command is as follows.

apt-get update
apt-get install glances

For CentOS/Fedora operating systems, the installation command is as follows.

yum install -y glances

Running Glances is as simple as entering the glances command.

Glances offer several hotkeys to alter the display format:

• a - Sort processes automatically
• c - Sort by CPU usage
• m - Sort by memory usage
• p - Sort by name
• i - Sort by disk usage
• d - Toggle disk I/O data display
• f - Toggle filesystem data display
• n - Toggle network data display
• s - Toggle sensor data display
• y - Toggle disk temperature data display
• l - Toggle warning logs display
• b - Show network usage in bytes
• w - Clear warning logs
• x - Clear warning and critical logs
• 1 - Display global CPU or per-CPU data
• t - View combined network usage
• u - View cumulative network usage

Glances also uses different colors to represent data:

• Green - Everything is normal
• Blue - Be cautious
• Violet - Warning
• Red - Critical

Glances is a powerful and user-friendly monitoring tool for Linux operating systems, offering a comprehensive display of various system metrics, allowing system administrators to quickly understand the current state of the system.