Text Repl

Text Replacement In Bash

• Bash tip: instead of spawning an instance of sed, you can do text replacement in "pure" Bash like status="${status//,/}". Breaking that down:
• status= # assign a new value to the Bash variable status.
• status="${ … }" # I just always use double quotes when doing parameter (and command) substitution.
• status="${status … }" # the new value I am assigning to status is the expansion of (value of) status, BUT first we alter that value…
• status="${status//PATTERN/STRING}" # the // means "globally replace" (a single / would replace the first occurrence of PATTERN)

status="${status//,/}"
status="${status//PATTERN/STRING}"

firstString="I love Suzi and Marry, but Suzi Most"
secondString="Sara"
echo "${firstString/Suzi/$secondString}"    # prints 'I love Sara and Marry'

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