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Series
In this series we will cover the Shell Scripting Topics which is important to know as a DevOps Engineer
Monitoring The Free RAM Space In a Linux Server #!/bin/bash FREE_MEM=$(free -mt | grep Total | awk '{print $4}') TH=100 if [[ $FREE_MEM -lt $TH ]] then echo "Memory Warning" else echo "Free Memory is $FREE_MEM M" fi Output - -> He...
-> We can automate our shell script using two ways Using AT command -> Using at command we can automate the script if we have to run one time. at <time> <command> Ex- bash <path of the script> ctrl+d #!/bin/bash echo "We are checking the at automati...
Break -> Suppose we want that our loop should stop running when certain conditions meet then we use Break. Example - Suppose we want to find a particular number from a list of numbers and if that number is found then we should come out of the loop. #...
What is Function? -> If we have to perform repetitive tasks then instead of writing that task every time we write it in a block and whenever needed we run that block and our task gets executed. This block is called a function. Example - Suppose we ha...
Conditional Statement -> Conditional Statement is used to perform a certain task based on some conditions. IF-ELSE #!/bin/bash read -p "Enter Your Age - " age if [ $age -lt 18 ] then echo "You can not vote" else echo "You can vote" ...
What is User Interactions? -> In the previous blog we have seen that if we have to print the name then we were setting it in the script only. For Example #!/bin/bash name="Bhaskar" echo "Name is $name" -> But if we want to take this value from the U...