simple question about bash .. ls and rm combination
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I used the word "deprecated" rather than "forbidden".
As for me I like to prove that you CAN teach old dogs new tricks. Having seen two separate shell scripting presentation in recent months where the presenters made cogent arguments for use of $() (including that it works in ksh which was important to me) was good enough for me to try to start changing the habit.
The cut command still exists and though I used it in several of my early scripts years ago for field separation I almost always use awk instead these days. Nowadays I typically use it mainly for character splits rather than field splits.