I need to replace string SALT in a file with content of another file. Problem is that the input file has multilines. I tried something like this in my bash script:
SALT=`cat salt.txt`;
sed "s/SALT/$SALT/" wp-config.php > result.txt
It work's fine when the salt.txt is single line, but if there are more lines it fails. I've read that it could do PERL. But I don't know how. Could you help me?
Another perl way:
perl -pe 's/SALT/`cat salt.txt`/e' wp-config.php > result.txt
The key here is the /e regexp option allowing us to use a perl command result as a substitution string.
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