Created cheatsheets for alias, cat, cp, export, kill, mv, pwd, and wc

cheat/cheatsheets/cp

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+# cp - copy. Copies a file or directory
+cp [-a, -f, -H, -i, -L, -n, -p, -P, -R, -X] [-v] [source] [target]
+
+-a : Same as -pPR
+-f : Force
+-H : Follow sym links
+-i : Prompt before overwrite
+-L : If -R, follow sym links
+-n : Do not overwrite
+-P : If -R, Do not follow sym links (Default)
+-p : Preserve meta data
+-R : Recursive (cp directories)
+-X : Do not copy extended attributes or resource forks
+-v : Verbose