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mutt is a command line mailing tool available from the cs shell. mutt allows fast, automated backup for files. mutt is often used in a script which builds, compiles, executes and backups a project with a simple command.

Usage examples:

Archive your project:

tar cvf ex3.tar *.c *.h

Send the project tar to an external account for backup:

mutt -s "ex3 files" -a ex3.tar < /dev/null

-s specifies the subject line, -a specifies the attached file, then the destination address and "< /dev/null" sends an empty string as the body text of the message.