Unix/Shell programming (command) questions? [closed]

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http://unix.stackexchange.com – I'm having trouble answering these questions below: A. Write unix commands to the following: remove all directories staring with "u" with all sub directories: write a command to indicate the shelll assigned to you: Display the /etc/passwd file one page at a time: extract only lines having "shell" from /etc/passwd write the shell script file s2 to place today date into the variable today, your home directory into the DIR variable, then display back those varibales with appropriate messages. fix the path, so you can execute s2 (name of a file) from home directory? B. Explain the purpose o (HowTos)