Can I view system stats in the Terminal?
The widget iStat Pro allows to monitor different system stats like
- CPU usage
- network bandwidth in/out
- memory usage
- ...
How can I view such system stats in the Terminal?
Solution 1:
Depending on what you want displayed there are several options available using Terminal:
-
top
: real-time sorted display of running processes such as memory and CPU usage -
iostat
: I/O summary statistics for terminal, device and CPU operations -
vm_stat
: Mach virtual memory statistics -
diskutil list
: disk/volume capacity -
df
: used/free space on mounted partitions -
fs_usage
: real-time file activity for both disk and network -
nettop
: updated information about the network (a bit liketop
for net I/O) -
w
: who is logged in and what they are doing; plus a brief system load summary -
ifconfig
andipconfig
: network interface and IP protocol details
Most of these commands have a huge list of options. It's probably best to consult the man
pages for details.
I usually rely on:
-
top -u -s 10
to identify CPU-hogging processes; -
fs_usage -f filesys
orfs_usage -f network
to identify processes generating a lot of disk/network load.
Solution 2:
The iStats ruby gem lets you see the CPU temperature via the command-line.
Installation
$ gem install iStats
Usage
$ istats