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bashtextsed

removing the first character in a text file using Sed

I have 100s of enormous text files in the form of 

p 127210 3240293 23423234 3242323423
3242323 23423423 23423234 32423423

which I want to turn to 

127210 3240293 23423234 3242323423
3242323 23423423 23423234 32423423

I've tried using

sed '1 s/^.//' input > output

but that gives me

 127210 3240293 23423234 3242323423
3242323 23423423 23423234 32423423

i.e. an annoying space where the p was. Can anyone help me modify the sed expression to get the output without the space?

Thanks

Solution

  • Following awk may help you in same.

    awk '!/^[0-9]+/{$1="";$0=$0;$1=$1} 1'   Input_file

    Explanation: Checking condition !/^[0-9]+/ which will check if a line doesn't start from digits then do following, then I am nullifying first field here(because you don't want p in output here), then I am re-arranging $0(current line) and re-arranging $1 too so that it could remove that initial space as per your request here.

    Output will be as follows.

    127210 3240293 23423234 3242323423
3242323 23423423 23423234 32423423