Linux-Admin_bash

#!/bin/bash
#######################################################         Script Information  ###############################################################
# Script to facilitate Linux administration 
#Updated 3/2/20
#Made by richard Sabo Santos

clear
echo " "
################################################              Functions section   ####################################################################
 

function close(){
if [ "$entry" == "close" ];then
  main
else
  echo " $entry" >> journal.txt
   reading
    fi
}


function journal() {
echo " Admin LOG" >> journal.txt
date >> journal.txt
echo " " >> journal.txt
}

function reading() {
read -p  "." entry
close
}


function pause(){
    read -p "$*"
}
#Main Menu
function main() {



############################################################################    Main Menu  #########################################################
clear
tput setaf 3; echo             LINUX ADMIN SHELL SCRIPT
echo                            By: Richard Sabo Santos
tput setaf 7; echo " "
echo " "
echo 1.  See block devices.
echo 2.  Free Memory.
echo 3.  CPU information.
echo 4.  Show Process page table.
echo 5.  Verify if NUMA Hardware is present.
echo 6.  How much RAM I need.
echo 7.  See who  is logged.
echo 8.  See Running Processes.
echo 9.  Admin journal ...write close to exit.
echo 10. Check for updates.
echo 11. Changing menu display settings.
echo 12. Change .bashrc file.
echo 13. Change .bash_profile file.
echo 14  Managing System Services.
echo 15. Verify which loader is in use.
echo 16. Update the grub Ubuntu.
echo 17. See the Enviroment variables.
echo 18. Show Network Statistics.
echo 19. Show IP Configurations.
echo 20. Show current Directory.
echo 21. Show Available Disk Spaces.
echo 22. Create Aliases.
echo 23. Show Memory/Swap statistics.
echo 24. Print System information.
echo 25. Change menu display settings.
echo 26. Updating grub fedora.
echo 27. Repair a File System.
echo 28. Upgrade installed packages.
echo 29. Show the Parameters used to boot the system.
echo 30. Adjust user account defaults.
echo 31. Configure SSH.
echo 32. Start a service.
echo 33. Enabling Trim.
echo 34. Stop a service.

echo 35. S.M.A.R.T all information.
echo 36. S.M.A.R.T self test.
echo 37. Check the supperblock.
echo 38. Check hard drive health.
echo 39. Show stats.
tput setaf 3;  echo " "
read -p "Enter a Number: "  option
tput setaf 7; echo " "



#####################################################	 #If statements with all available   options ########################################################33
if [ "$option" == '1' ];then                                    #Block Devices
clear
echo "Results:"
lsblk
date >> block.txt
echo " " >> block.txt
lsblk >> block.txt
pause 
main




elif [ "$option" == "2" ];then                            #memory stats
clear
date >> mem.txt
echo " " >> mem.txt
        echo "Results:"
	free "-m" >> mem.txt
free "-m"
echo " "
pause
main




elif [ "$option" == "3" ];then                            #cpu Info
clear
        echo Showing CPU information
cat /proc/cpuinfo
date >> cpu.txt
echo " " >> cpu.txt
cat /proc/cpuinfo >> cpu.txt
echo " "
pause
main




elif [ "$option" == "4" ];then                           #process maps
clear
        echo showing process page table
cat /proc/$$/maps
date >> procmap.txt 
echo " " >> procmap.txt
cat /proc/$$maps >> procmap.txt
echo " "
pause
main






elif [ "$option" == "5" ];then                          #verify if numa is installed
clear
        echo results:
numactl --hardware
date >> numa.txt
echo " " >> numa.txt
numactl --hardware >> numa.txt
echo " "
pause
main





elif [ "$option" == "6" ];then                         #Calculating how much memory.
clear
read -p "Enter the Physical RAM Currently Installed " ram
         if  [ "$ram" -lt 2  ];then
                echo you need 2 times the amount of ram as swap space but if hibernation is needed you will need 3 times.
        pause
        main
        elif [ "$ram" -lt 8 ];then
                echo You will need to have equal the amount of ram, but if hibernation is needed you will need 2 times the ram.
        pause
        main
                elif [ "$ram" -lt 64 ];then
                 echo At least 4 GB is required, but if hibernation is needed you will need 1.5  the ram.
         pause
        main
        else
                                echo 4 Gb is required, hibernation not recommended
                                pause
                                main
        fi
echo " "
main







elif [ "$option" == "7" ];then                                                           #Logged users
clear
        echo Results:
w
date >> userlog.txt
echo " " >> userlog.txt
w >> userlog.txt
echo " "
pause
main



elif [ "$option" == "8" ];then                                                          #showing running Processes 
clear
         echo Showing Running Processes.
        ps 
	date >> process.txt
	echo " " >> process.txt 
	ps >> process.txt
        echo " "
        pause
        main


elif [ "$option" == "9" ];then #journal                                                  #keep JOurnal
clear
         echo Admin Journal.
         if [ -e journal.txt ];then
                 clear
                 echo Admin Journal
                 date
                 journal #entry to txt file

                 reading #input

                  close #if statement

         else
                 touch journal.txt
                  clear
                  echo Admin Log
                 date
                 journal
                  reading   #getting input
                  close # if statement

          fi




elif [ "$option" == "10" ];then                                                         #Check for updates 
clear
         echo Checking for updates....
        sudo  yum install updates && echo "System Updated " && main || echo "Not permision"
        pause
        main


elif [ "$option" == "11" ];then                                                       #Configure default grub
        vi /etc/default/grub && main


elif [ "$option" == "12" ];then                                                        #.bashProfile configuration file
         vi .bashrc && main

elif [ "$option" == "13" ];then
         vi .bash_profile && main
elif [ "$option" == "14" ];then                                                         #System Information 
        clear
	date >> systemctl.txt
	echo " " >> systemctl.txt
        systemctl >> systemctl.txt
	clear
	cat systemctl.txt 
       	main


elif [ "$option" == "15" ];then                                                          #Probing boot loader
        clear
        grubby --bootloader-probe || echo permision denied
        pause
        main
elif [ "$option" == "16" ];then                                                           #Updating the grub
        clear
        echo Updating the grub..
         sudo grub2-mkconfig o /boot/grub2/grub.cfg  || echo "Permission Denied"
        pause
        main
elif [ "$option" == "17" ];then                                                           #Enviroment Variables
        clear
        echo Showing enviroment variables.
	 date >> enviroments.txt
	echo " " >> enviroments.txt  
         env >> enviroments.txt
	 clear 
	 cat enviroments.txt 
        pause
        main
elif [ "$option" == "18" ];then                                                            #Network Statistics 
        clear
        echo Showing Network Statistics...
        echo " "
	date >> netstat.txt 
	echo " " >> nestat.txt 
        netstat >> netstat.txt
	clear
	cat nestat.txt
        pause
        main
elif [ "$option" == "19" ];then                                                           #IP configurations 
        clear
        echo Showing Ip configurations...
        echo ""
	date >> ifconfig.txt
	echo " " >> ifconfig.txt 
        ifconfig >> ifconfig.txt
	clear
	cat ifconfig.txt
        pause
        main



elif [ "$option" == "20" ];then
        clear
        echo Your current directory is...
        pwd
        pause
        main

elif [ "$option" == "21" ];then
        clear
        echo Available disk spaces..
        df >> diskspace.txt
        pause
        main

elif [ "$option" == "22" ];then
clear
tput setaf 3; echo " "
echo Creating and Aliases
tput setaf 7; echo " "
echo "  "
read -p "Enter the alias to create " alias1
read -p "Enter the command to associate " alias2
echo " "
  alias $alias1=$alias2

echo "Your alias $alias1 was created "
pause
main

elif [ "$option" == "23" ];then
clear
echo Showing memory/swap Stats....
echo ""
cat /proc/meminfo >> swapmemorystats.txt
vmstat >> swapmemorystats.txt
clear
cat swapmemorystats.txt
cat swapmemorystats.txt

pause
main

elif [ "$option" == "24" ];then
        clear
        echo System information...
        echo " "
        uname -a
        pause
        main


elif [ "$option" == "25" ];then
        clear
        vi /etc/default/grub
        pause
        main
elif [ "$option" == "26" ];then
        clear
        echo "Updating boot loader on fedora"
         grub2-mkconfig -o /boot/grub2/grub.cfg
        pause
        main


elif [ "$option" == "27" ];then
        clear
        echo Reparing the the File system...
        echo " "
        read -p "Please enter the device.  example: /dev/sdc1  " device
         sudo unmount $device && sudo fsck -p $device && sudo mount $device || echo "FIle system cannot be fix"

        pause
        main

elif [ "$option" == "28" ];then
        clear
        echo Upgrading packages..
        echo " "
        sudo apt-get upgrade
        pause
        main
elif [ "$option" == "29" ];then
        clear
        echo Paramenter used to boot the system....
        cat /proc/cmdline >> bootparamet.txt
        pause
        main
elif [ "$option" == "30" ];then
        clear
        vi /etc/login.defs
        pause
        main
elif [ "$option" == "31" ];then
        clear
        vi /etc/ssh/sshd_config
        pause
        main


elif [ "$option" == "32" ];then
        clear
        echo Starting services...
        echo " "
        read -p "Enter the name of the service " service
         systemctl start $service && echo $service service is now running || echo Error the service cannot start
        pause
        main



elif [ "$option" == "33" ];then
clear
echo Enabling TRIM command for deleting SSD files....
sudo fstrim -a -v && echo Done Command ran succesfully... || echo permission denied....
pause
main

elif [ "$option" == "34" ];then
        echo Stopping service..
        read -p "Enter the service to stop " service1
        sudo systemctl stop $service && echo Service was stopped || echo Permission Denied....
        pause
        main
elif [ "$option" == "35" ];then
        clear
        echo smart commands...
        read -p "Please enter the device to check.." sd
         sudo smartctl --all $sd >> Smart.txt
        pause
        main


elif [ "$option" == "36" ];then
        clear
        echo Selft test...
        read -p "Please enter the device to self test.." sd1
         sudo smartctl --test=long $sd1 >> selftest.txt
        pause
        main
elif [ "$option" == "37" ];then
        clear
        echo Examing values in superblock...
        echo " "
        read -p "Please enter the device to check.. " sd2
        sudo tune2fs -l $sd2 >> Superblock.txt
	clear
	cat Superblock.txt 
        pause
        main
elif [ "$option" == "38" ];then
        clear
        echo  Drive health status...
        echo " "
         read -p "Please enter the device " sd3
         sudo smartctl -H $sd3 >> Health.txt 
	 clear
	 cat Health.txt
pause
main

elif [ "$option" == "39" ];then
	clear
	echo Showing all stats..
	cat *.txt
       pause
main 


else
clear
echo " Noo option was selected....."

pause
main
fi



}
main