Grep Without "-" in Shell/Bash

Have you ever needed to search for a pattern in a file, but couldn't remember the exact syntax for using grep with the - option? Fear not! There's a way to use grep without the -, and it's actually quite simple.

Here's an example of how to use grep without the -:

$ grep 'pattern' filename

This will search for the pattern in the specified file and return any lines that contain the pattern.

Here's another example:

$ grep 'pattern' *

This will search for the pattern in all files in the current directory and return any lines that contain the pattern.

Note that in both examples, we didn't use the - option. Instead, we simply specified the pattern we wanted to search for and the file(s) we wanted to search in.

You can also use regular expressions with grep without the -. Here's an example:

$ grep -E '[0-9]+' filename

This will search for any number in the specified file and return any lines that contain a number.

In conclusion, using grep without the - is a simple and effective way to search for patterns in files. It's especially useful if you don't remember the syntax for using grep with the -.