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cd ~ (home directory) cd ../.. ls -la (lists files) CMD + K (clear screen) echo $SHELL BASH => "Born Again SHELL" which "name" => location of file echo $PATH Edit Path => nano .bash_profile Customize bash: PS1="\u$ " alias ll="ls -lahG" export PATH="/usr/local/bin:/usr/local/sbin:usr/local/mysql/bin:$PATH" <! -- DONE --> cat .bash_profile (lists contents) Install XCODE on the Mac gcc -v (lists the version of Mac programmings) <!-- Installing Ruby --> ruby-lang.org
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