Loading ...Linux command to gathers up information about a Linux system
If you are developing an application for Linux desktop and would like to automatically find out more information about system, use the following commands in shell scripts to gather information about system. Recently I was involved in project where I need to collect information about running GUI, browser and other information such as disk space, running kernel etc.
Find out KDE Desktop version:
konqueror --version
Find out Gnome Desktop version:
gnome-panel --version
Find out Mozilla browser version:
mozilla --version
Find out Firefox browser version:
firefox --version
Find out current Language:
set | egrep '^(LANG|LC_)'
Find out disk space usage:
df -h
Find/Estimate file space usage:
du -h
Find out version of Linux glibc:
ls -l /lib/libc-*.so /lib/libc.so*
Find out user limits:
ulimit -a
Find out installed device drivers (modules)
lsmod
Find out information about an X server:
xdpyinfo
It can find out:
- Name of display:
- Version number
- Vendor name (such as The XFree86 Project)
- Vendor release number
- And XFree86 version number
Find out information about Linux CPU
cat /proc/cpuinfo
Find out information about Linux Memory
cat /proc/meminfo
OR
free -m
OR
free -g
Find out user shell name:
ps -p $$ | tail -1 | awk '{ print $4 }'
Dump Linux kernel variables
/sbin/sysctl -a
Find out running Linux kernel version:
uname -mrs uname -a cat /proc/version
Dump or display memory information and swap information:
free -m
Network card and IP address information:
ifconfig -a ifconfig -a|less
Debian / Ubuntu Linux network configuration file (all interface eth0,eth1,...ethN)
more /etc/network/interfaces
Redhat / CentOS / Fedora Linux network configuration file (eth0)
more /etc/sysconfig/network-scripts/ifcfg-eth0
Note replace eth1 for 2nd network card and so on.
Display routing information
route -n route
Display list of all open ports
netstat -tulpn
View login related logs
tail -f /var/log/secure vi /var/log/secure grep 'something' /var/log/secure
View mail server related logs
tail -f /var/log/maillog vi /var/log/maillog grep 'something' /var/log/maillog
Find how long the system has been running
uname w
Show who is logged on and what they are doing
w who
Display list of tasks
top
Display all running process
ps aux ps aux | grep process-name
Display list of all installed software on Redhat / CentOS / Fedora
rpm -qa rpm -qa | grep 'software-name' rpm -qa | less
Display list of all installed software on Debian / Ubuntu
dpkg --list
Once information collected it can be easily send as an email to help desk. You can use all above command to gathers information about a remote Linux system over secure ssh session (see related functions that gathers up information about a Linux and FreeBSD system). Best part is all above commands runs in non privileged mode.
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- Linux: Find out how many file descriptors are being used
- Shell Scripting: Read entries from administrative database
- Get Information About Your BIOS / Server Hardware From a Shell Without Opening Chassis ( BIOS Decoder )
- Solaris > Gathered System Information or How to print system configuration
- QD#4: America’s Dumbest Criminals, OpenOffice.org Premium, Firefox 2 beta, Security Engineering book, 21 Tactics to Increase Blog Traffic
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Tags: cpuinfo, cpu_information, disk_space, hardware_information, linux_cpu, linux_glibc, linux_kernel_version, linux_system_configuration, memory_information, network_information, space_usage
Also uname -r displays the kernel version.
-narayanan
OMG I forgot to mention uname :/? thanks for pointing out I will update post
Hi,
May I know the command to find out the Linux version. Is this the same command ‘uname -a’ which prints the kernel version? Both are same?
Thanks,
Guru
nice information… but how can i run the cat /proc/cpuinfo as a user log in only? sudo or su in the first was not still recognize it.