linux - Sed find,match and replace -


so have following script (just test)

 #!/bin/bash  file in *   echo $file   done

and i'm trying add parenthesis around file. i'm pretending dont know full name of variable file. 

  cat sc.sh | sed 's/fi*/(&)/g'   #!/bin/bash   (f)or (fi)le in *     echo $(fi)le   done

so i'm trying match words beginning fi , adding parenthesis around them. doing wrong? tried number of variations didn't work. can see command matches f or fi , adds parenthesis around them not whole word. why?

any appreciated.

your regex fi* looking f followed 0 or more i's. want more this:

cat tmp | sed 's/\bfi[^ ]*/(&)/g'

\bfi looks word boundary (i.e. start of word) followed 'fi'. [^ ]* matches remaining (non-space) characters in word.


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