This is a small shell script that captures almost all the necessary details of a linux system. I tested this script in CentOS and Redhat operating systems. You can access this script directly from github.
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| #!/usr/bin/env bash | |
| # Author Amal G Jose | |
| # This script provides the consolidated details of a linux operaing system | |
| # clear the screen | |
| clear | |
| # Unset Variables | |
| unset sys_date tempvar os architecture kernelrelease internalip externalip nameserver loadaverage sysuptime | |
| # Define Variable tempvar | |
| tempvar=$(tput sgr0) | |
| #Check System date | |
| echo -e '\E[33m'"System Date :" $tempvar `date` | |
| # Check whether the system is connected to Internet or not | |
| ping -c 1 google.com &> /dev/null && echo -e '\E[33m'"Internet: $tempvar Connected" || echo -e '\E[33m'"Internet: $tempvar Disconnected" | |
| # Check OS Type | |
| os=$(uname -o) | |
| echo -e '\E[33m'"Operating System Type :" $tempvar $os | |
| # Check OS Release Version and Name | |
| cat /etc/*-release | grep 'NAME\|VERSION' | grep -v 'VERSION_ID' | grep -v 'PRETTY_NAME' > /tmp/osrelease | |
| echo -n -e '\E[33m'"OS Name :" $tempvar && cat /tmp/osrelease | grep -v "VERSION" | cut -f2 -d\" | |
| echo -n -e '\E[33m'"OS Version :" $tempvar && cat /tmp/osrelease | grep -v "NAME" | cut -f2 -d\" | |
| # Check System Architecture | |
| architecture=$(uname -m) | |
| echo -e '\E[33m'"Architecture :" $tempvar $architecture | |
| # Check Kernel Release | |
| kernelrelease=$(uname -r) | |
| echo -e '\E[33m'"Kernel Release :" $tempvar $kernelrelease | |
| # Check hostname | |
| echo -e '\E[33m'"Hostname :" $tempvar $HOSTNAME | |
| # Check Internal IP | |
| internalip=$(hostname -I) | |
| echo -e '\E[33m'"Internal IP :" $tempvar $internalip | |
| # Check External IP | |
| externalip=$(curl -s ipecho.net/plain;echo) | |
| echo -e '\E[33m'"External IP : $tempvar "$externalip | |
| # Check DNS | |
| nameservers=$(cat /etc/resolv.conf | sed '1 d' | awk '{print $2}') | |
| echo -e '\E[33m'"Name Servers :" $tempvar $nameservers | |
| # Check Logged In Users | |
| who>/tmp/who | |
| echo -e '\E[33m'"Logged In users :" $tempvar && cat /tmp/who | |
| # Check RAM and SWAP Usages | |
| free -g | grep -v + > /tmp/ramcache | |
| echo -e '\E[33m'"Ram Usages :" $tempvar | |
| cat /tmp/ramcache | grep -v "Swap" | |
| echo -e '\E[33m'"Swap Usages :" $tempvar | |
| cat /tmp/ramcache | grep -v "Mem" | |
| # Check Disk Usages | |
| df -h > /tmp/diskusage | |
| echo -e '\E[33m'"Disk Usages :" $tempvar | |
| cat /tmp/diskusage | |
| # System statistics | |
| top -n 1 -b | head -5 > /tmp/sysstats | |
| echo -e '\E[33m'"System Statistics :" $tempvar | |
| cat /tmp/sysstats | |
| # Check System Uptime | |
| sysuptime=$(uptime | awk '{print $3,$4}' | cut -f1 -d,) | |
| echo -e '\E[33m'"System Uptime Days/(HH:MM) :" $tempvar $sysuptime | |
| # Check the ssh connections to the system | |
| echo -e '\E[33m'"SSH connections made to the system :" $tempvar | |
| w > /tmp/sshconn | |
| cat /tmp/sshconn | |
| # Unset Variables | |
| unset tempvar os architecture kernelrelease internalip externalip nameserver loadaverage sysuptime | |
| # Remove Temporary Files | |
| rm /tmp/osrelease /tmp/who /tmp/ramcache /tmp/diskusage /tmp/sshconn /tmp/sysstats |
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