Bash is the environment you use on the command line (as long as you're on a Mac or Cloud9 - Windows has a different command line environment)
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cd: change directorycd foo: move into the directory called "foo" relative to where you are now (this is called using a "relative path")cd /Users/my_username/foo: move into directory called "foo" at that specific path (this is called using an "absolute path")cd ..: move up one directory
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ls: list all files and subdirectories of this directoryls -a: "all"; show hidden files that begin with "."ls -l: list them in a vertical listls -p: show a slash after directories like this:foo/ls -alp: do all three of those things. You can combine option flags together.man ls: open the manual page forls- shows all the options you can use
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pwd: show the current path -
cat [somefilename]: print that file's contents into the terminal -
mv some/file/path new/file/path: relocate a file or directory -
rm some/file/path: delete that filerm -r some/directory/path: delete a directory. "r" stands for "recursive"
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man [anycommand]: show the manual page for that commandq: quit out ofman