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3 Posted Topics
Hi, how do you append to a variable? I can only get it to work with a seperate file like this: printf $number1 >> sum.txt I tried this : $number1 >> $sum but it says $sum: ambiguous redirect, any ideas? :)
Can I use my own variables within awk and sed for example: I've written a while loop with a counter $i and I want to use the value of $i within sed and awk to edit certain lines of text within a data file. I want to use : sed …
Hi I have a simple question. Is there an easy way read a date of birth from a file and calculate how old that person is based on today's date? And would I need the make sure the birthdates are enterered in a particular format?
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