Answers for "sed find and replace in a file"

14

replace text with sed

sed -i 's/old-text/new-text/g' input.txt
Posted by: Guest on March-31-2020
0

sed replace

For using match in sed replacement, just border it with '(' and ')':
echo Before123 | sed 's/Before([0-9]*)/1After/g'
123After	# number is matched withtin '( )' and replaced in '1'
Example with 2 match replacements
echo a_b | sed 's/(^.*)_(.*$)/first is 1 and 2 is after/g'
Posted by: Guest on November-27-2020

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