linux cli find replace text in files in folder code example

Example 1: ubuntu command line replace word in files

sed -i 's/original/new/g' file.txt

Example 2: sed replace in file

sed -i 's/foo/bar/g' hello.txt

Example 3: bash find and replace all files with specifc name with another file

find . -name "boom.txt" -exec cp ~/replace.txt {} \;