How to ignore aliases or functions when running a command?
Sometimes it's useful to ignore aliases (and functions, including shell built-in functions). For example, on your system you might have this set:
alias grep='grep --color=auto'
But sometimes, you need to do a one-liner with pipes where the colors mess things up. You could use any of the following:
unalias grep; grep ... #1 unalias -a; grep ... #2 "grep" ... #3 \grep ... #4 command grep #5
#1 unaliases grep before using it, doing nothing if grep wasn't aliased. However, the alias is then gone for the rest of that shell session.
#2 is similar, but removing all aliases.
#3 and #4 are the same, allowing you to run grep once while ignoring the grep alias.
#5 is different from the others in that ignores aliases and functions. It has a few options which you might want to use, see help command.