CODEWITHSUNDEEP
regexbash
thetna
thetna

Reputation: 7143

removing very first token of a file only

i am not much familiar in scripting. it can be very easy problem. I want to remove first token of every file. 

  file 1

 1 this is good


  file 2
  2 this is another file.

i would like to remove 1 and 2 from file 1 and file 2. how would do it? any bash command for it?

Upvotes: 1

Views: 77

Answers (3)

vvasch
vvasch

Reputation: 366

Or with awk:

$ awk '{if (NR==1) {$1="";print $0;} else print $0}' input_file

(This preserves the space at the start of the line)

Upvotes: 2

Fredrik Pihl
Fredrik Pihl

Reputation: 45672

$ sed '0,/1/{s/1//}' f1 
  this is good

Upvotes: 1

perreal
perreal

Reputation: 98048

Using sed and assuming you don't want to preserve a leading space:

sed '1{s/\s*\w*//}' input_file

This will works on the very first line (1{}) and uses substitute command (s/pattern/replace/) to delete the first white spaces and following word characters (\s*\w*). The word characters are [a-zA-Z0-9].

Upvotes: 1

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