3 thoughts on “Add Line Numbers

  1. could you kindly break down the ‘N;s/\n/\t/’ part … i understand you want to substitute \n with \t … what is the N; there for ?
    thanks in advance

  2. The thing is – I don’t know either. I get the command from various sources – and if I find them useful, I post it here. Only if I need to change its working do I spend time to study it. I suggest you take a look at the manual pages – you’ll get it.

  3. As an easier alternative, you could also use “cat” with the “n” flag.

    cat -n filename > filename_number.txt

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