Interpreter directives allow scripts and data files to be used as
commands, hiding the details of their implementation from users and
other programs, by removing the need to prefix scripts with their
interpreter on the command line.
I was researching the other question, when I realized I don’t understand what’s happening under the hood, what are those /dev/fd/* files and how come child processes can open them.
I am confused about how Ctrl-key combinations work in terminal. In bash man page, there are various combinations such as:
How can I count the number of files (in a directory) containing a given string as input in bash/sh?
I customized my bash with this in my bashrc
I am trying to use a variable consisting of different strings separated with a | as a case statement test. For example:
I’d like to write a function that I can call from a script with many different variables. For some reasons I’m having a lot of trouble doing this. Examples I’ve read always just use a global variable but that wouldn’t make my code much more readable as far as I can see.
How can I read a dash file from the terminal other than delimiting it with ./
In the terminal, I can type Ctrl + R to search for a matching command previously typed in BASH. E.g., if I type Ctrl + R then grep, it lists my last grep command, and I can hit enter to use it. This only gives one suggestion though. Is there any way to cycle through other previously typed matching commands?
Alright, when I run certain commands the wrong way, (misspelled, etc.) The terminal outputs this: > instead of computername:workingfolder username$, and when I type enter it goes like this: