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UNIX Control-Key Commands

UNIX understands several control-key commands, commands you enter by holding down the control key (ctrl) while striking a second key. Listed below are some of the UNIX control-key commands:

ctrl-s

freezes the screen and stops any display on the screen from continuing

(equivalent to a no-scroll key) (sometimes takes a moment to work)

ctrl-q

un-freezes the screen and lets screen display continue

ctrl-c

interrupts a running program

ctrl-\

same as ctrl-c but stronger (used when terminal doesn't respond)

ctrl-z

suspends a running program (use the fg command to continue the program, see section Controlling Jobs)

ctrl-h

deletes last character typed

ctrl-w

deletes last word typed

ctrl-u

deletes last line typed

ctrl-r

redraws last line typed

ctrl-d

ends text input for many UNIX programs, including mail and write.

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