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It is working fine, if I have only one space. But in my input file, I might have more than single space say " " or " " or " " etc. But I dont know the exact number of spaces.

You are correct, no need to give -F" ", as the default delimiter for awk command is "<space>". But it is always better practice to use -F" " to specify the delimiter what we are passing...
...

var1="nbs2yth 3123 1 fsfsa thisissamletext"
echo $var1 | awk -F" " '{print $1}'

Dear All,

I'm glad that I've also joined in this forum. Good work fellas... :b:
Keep going...! :)

I am having a .csv file where I am reading the values with comma(,) as delimiter. After...