For a system admin, its always exciting to learn new commands to monitor system resources, and here is a new one. Its called Saidar and is a very small tool. Even simpler than Nmon and Glances. It displays a small screen full of statistics on a variety of system resources that you might want to monitor.
Saidar is a part of the libstatgrab suite.
The man page definition is ...
saidar is a curses-based tool for viewing the system statistics available through libstatgrab. Statistics include CPU, processes, load, memory, swap, network I/O, disk I/O, and file system information.
The output keeps updating at an interval and looks similar to this
Hostname : enlightened Uptime : 00:59:01 Date : 2014-01-20 10:58:01 Load 1 : 0.60 CPU Idle : 86.40% Running : 2 Zombie : 4 Load 5 : 0.66 CPU System: 1.11% Sleeping : 301 Total : 346 Load 15 : 0.79 CPU User : 12.48% Stopped : 39 No. Users : 5 Mem Total : 7975M Swap Total: 1951M Mem Used : 89.26% Paging in : 0 Mem Used : 7119M Swap Used : 0B Swap Used : 0.00% Paging out: 0 Mem Free : 856M Swap Free : 1951M Total Used: 71.71% Disk Name Read Write Network Interface rx tx sda 0B 0B eth0 35B 70B lo 0B 0B Total 0B 0B Mount Point Free Used
Install saidar on ubuntu/fedora/centos
$ sudo apt-get install saidar
$ sudo apt-get install statgrab-tools
Launch saidar by simply typing the name.
The refresh delay is 3 seconds by default and can be changed using the "-d" parameter.
$ saidar -d 1
Saidar can also color the output using the "-c" option.
Use the help option to get details about supported options.
$ saidar -help Usage: saidar [-d delay] [-c] [-v] [-h] -d Sets the update time in seconds -c Enables coloured output -v Prints version number -h Displays this help information. Report bugs to <[email protected]>.