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lang-bash
info bash: "For almost every purpose, shell functions are preferred over aliases."ls -lorrm -i?alias rm='rm -i'. One day, when you need it most, the alias won't be there andboom!something important will be lost.rm -i, then you cannot count on having a shell script as well. So do you always typerm -ievery time?rmand expecting the-ibehavior, then one day the alias is not there (for some reason it gets unset or not set or you're on a different system) and you typermand it goes ahead immediately deleting stuff without confirmation. Oops! However, if you did an alias likealias askrm='rm -i'then you'd be OK, since you'd get a "command not found" error.