UNIX for Dummies Questions & Answers

Hey guys and gals,

Working on a script to limit the reoccurrance of characters in a line.

Code:

sed "/\(.\).*\1/d" -i file.txt
sed "/\(.\).*\1.*\1/d" -i file.txt
sed "/\(.\).*\1.*\1.*1/d" -i file.txt
..

To limit character reoccurance with 1x, 2x, 3x etc.

However I would like to be able to put the 1x, 2x, 3x in the script as a variable, but cant seem to figure out how that is best done..

So basic idea in script would be something along the lines of ;

Code:

 
#!/bin/bash 
echo "enter filename to read from :" 
read in_file
echo "enter filename to write to :"
read out_file
echo "number of reocurring characters to allow :"
read numb_char
#
sed "/\(.\).*\1.*\1.*1/d" $in_file > $out_file

So wondering how to be able to have the .*\1 sequences done with the $numb_char variable...



Any pointers ?

Try:

Code:

n=2
sed  "/\(.\)\(.*\1\)\{$n,\}/d" file.txt

That looks like it does it !

Thanks a lot for the help and now I have a better idea on
how such things are accomplished.

Thanks again, have always gotten awesome help here