I am writing my own shell and need to implement a history feature where up and down arrow keys show history of commands executed. I need to find out when up and down keys are pressed.
How do i do this?
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I am writing my own shell and need to implement a history feature where up and down arrow keys show history of commands executed. I need to find out when up and down keys are pressed.
How do i do this?
you want to be capturing input in raw mode. this can get kinda complicated, but here’s an example that should get you on the right path:
http://docs.linux.cz/programming/c/unix_examples/raw.html
i’m assuming you’re writing your shell in c. if you’re using a more high-level language, there might be an easy way to get raw input. in python, for instance, i would use the ncurses module.