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I have a string like " '2','asds','ddqw','NULL','qwsd' "
and I would like replace 'NULL' by NULL (without quote).
I tried the next :
#Replace "'NULL'" by "NULL" to avoid error with mysql
sed -e 's/"$nullString"/"$nullString2"/g' mysql.txt > mysql2.txt
sed -e 's/$nullString/$nullString2/g' mysql.txt > mysql2.txt
and this is not working, there is no difference between both files!
how can I do that.
Is it possible to directly work with the string instead of a file?