Regex Tutorial | Regular Expression with Regular Expression in Java, Regular Expression in PHP, Regular Expression in Python, Regular Expression in JavaScript etc.
In MongoDB, the regular expressions are used for pattern matching, which is basically for searching patterns in a string within documents. It is a generalized way of matching a pattern to a sequence of characters. The $regex operator is used as a regular expression to find a pattern in a ...
rename 's/string/other string/' * string Example: rename 's/txt/TXT/' *.txt ADVERTISEMENT Look at the above snapshot, all '.txt' are converted into '.TXT'. ADVERTISEMENT In above two examples the strings used were present only at the end of the file name. But this example is differ...