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/bin/bash A through Z 🧵 #bashthread #bash
alias ... creates a nickname for a command which makes it easier to invoke that command. E.g. instead of doing, "ls -l" you can replace it with simply, "ll" - this is a good way to make funny inside joke command names. 
apropos ... searches the manual pages. bash has a built in manual which can be invoked with, "man -k" -- apropos can search through the entire manual. Here's a search for apt-get:
