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linux:sysadmin:system_infos

System Information

General

Show system uptime:

uptime

Show time, date and timezone:

date

Information about you current Linux release:

cat /etc/issue

or

lsb_release -a

Or Red Hat specific version information:

cat /etc/redhat-release

System Monitoring

Show all processes running on the system:

ps -aux

Show system load and usage

top

Show memory (RAM and Swap) usage (-m is for Megabyte)

free -m

Show infos about Kernel and Modules

Which kernel versions are installed?

rpm -qa | grep kernel

Which kernel version is actually used?

uname -a

Show bootup messages:

dmesg

Networking

Show interfaces configurations

ifconfig

Show routing table:

route -n

Get information about DNS:

dig <IP or hostname>

Users

Get information about a system user:

finger <username>

Memory

Infos about server memory (RAM)

cat /proc/meminfo

CPU

Infos about server CPU(s)

cat /proc/cpuinfo
/srv/wiki.niwos.com/data/pages/linux/sysadmin/system_infos.txt · Last modified: 2012/05/22 11:32 by niwo