R

UNIX commands

reading
- mail
- user input into shell scripts

receiving
- files from remote hosts
- using ftp
- using hhcp
- mail

redirection
- explanation of
- stdin (standard input)
- stdout (standard output)

regular expressions
- explanation of
- matching filenames with

remote systems
- logging in to

removing
- directories See deleting
- duplicate lines from files See also sort command
- files See deleting
- print jobs from queue
- symbolic links

renaming
- directories
- files

replying to mail

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