CODEWITHSUNDEEP
linuxbashsed
AlexCon
AlexCon

Reputation: 1217

Capitalize the first letter matching a pattern

I have a dozens of files that contain the following text:

request {
      Request {        
        input("testing")
      }
}

I would like to use sed to capitalize the first letter of any text within input. For example, I want testing to be Testing. I tried the following command to capitalize the beginning of all, but how can I only apply it to input ?

sed -e "s/\b\(.\)/\u\1/g"

Upvotes: 1

Views: 84

Answers (1)

nu11p01n73R
nu11p01n73R

Reputation: 26667

How about

sed 's/input("\(.\)/input("\u\1/'

Test

$ echo -e 'request {
      Request {        
        input("testing")
      }
}' | sed 's/input("\(.\)/input("\u\1/'
# Outputs
# request {
#      Request {        
#        input("Testing")
#      }
#}

What it does?

  • /input("\(.\) Matches input(" followed by the first character( in example t. The character matched by . is captured in \1

  • input("\u\1 Replacement string. input(" is replaced with itself. \u\1 converts the character captured in \1 to uppercase.

Upvotes: 1

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