sed -i "294s/hamham/miaumiau/" file.txt
http://www.mydatabasesupport.com/forums/shell/270141-replace-line-x-string-y-using-sed-awk.html
sed -i "294s/hamham/miaumiau/" file.txt
http://www.mydatabasesupport.com/forums/shell/270141-replace-line-x-string-y-using-sed-awk.html
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