This might be the oldest trick I learned when I started using rm and mv on the command line on Linux ages ago.
The trick is to use the -i option to rm and mv to make sure you are not deleting or moving the wrong files.
alias rm='rm -i'By creating an alias for rm you will be prompted for confirmation before deleting files, since the alias will let rm be replaced by rm -i which prompts for confirmation.
The same pattern can be used for other commands and simple as it is it can be a lifesaver.