[Useful bash commands] #cmd

sed.sh

#####  Use the contents of a file to replace a string using SED
# You can use the `r` command.
# Reference: https://stackoverflow.com/a/6790967/1673077
# Example: use the contents of fileA.txt to replace the line that contains 'china' in fileB.txt
sed -i -e '/china/{r fileA.txt' -e 'd' -e '}' fileB.txt