sort question

[Andre Berger <uzscd5@uni-bonn.de>]

I have a csv file I would like to sort linewise like

1   text
2   text
3   text
.   
.  
. 
10  text

How can I avoid the current sorting result

1   text
10  text
2   text
3   text
.
.
.

? TIA

-Andre

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