sed search an replace code example
Example 1: sed replace in file
sed -i 's/foo/bar/g' hello.txtExample 2: sed replace with variable
Use double quotes to make the shell expand variables while preserving whitespace:
sed -i "s/$var1/ZZ/g" "$file"sed -i 's/foo/bar/g' hello.txtUse double quotes to make the shell expand variables while preserving whitespace:
sed -i "s/$var1/ZZ/g" "$file"