Shell script: How to add multiple sequence numbers
This can be acheived in many ways. Through for loop Write a for loop using {}(know more about {} HERE) to mention the range of numbers and use let command to add those numbers. Below is the script which will uses for loop to add 1 to 100 numbers #!/bin/bashj=0for i in {1..100}dolet j=j+idoneprintf “Sum of 1 to 100 numbers is %d” $j Explination: for will take each number in to i variable and adds up to j for each loop and give you the final result in j as shown in above printf command.Note: Try to avoid echo command as much as possible as this is not protable.Through while loop: Loop will continue while the condition is true. #!/bin/bash j=0i=0while [[ “$i” -le 100 ]]dolet j=j+i,i++doneprintf “Sum of 1 to 100 numbers is %d” $j Explination: While loop will check for condition that i less than equal to 100, the loop passes untill i reaches 100. let command is used to increment j and i. And then final value is stored in j. Through untill loop: Untill loop is similar to while loop but in reverse. Loop will happen untill the condition is true. #!/bin/bashj=0i=0until [[ “$i” -gt 100 ]]dolet j=j+i,i++doneprintf “Sum of 1 to 100 numbers is %d” $j Through awk scripting. seq 1 100 | awk ‘{ sum+=$1} END {print sum}’ Hope this helps to add...
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