Linux in a Nutshell, Fifth Edition

showkey | 423

Linux

Commands

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Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

Options

-b, --binary

Read files in binary mode. The default on DOS or Windows.

-c, --check

Check the SHA1 sum and file information in the file argument

(or standard input) against the corresponding files and verify

that they are consistent. The input must have been generated

by an earlier sha1sum command.

--help

Print usage information and exit.

--status

Don’t generate output messages; the exit code indicates

success or failure. Used only with --check.

--string=string

Compute the SHA1 sum for the specified string. This option

does not take a file argument. Put quotes around the string if it

contains spaces.

-t, --text

Read files in text mode. The default.

--version

Print version information and exit.

-w, --warn

Warn about improperly formatted checksum lines. Used only

with --check.

showkey

showkey [options]

Print keycodes, scancodes, or ASCII codes of keys pressed on the

keyboard. The default is to show keycodes. In keycode and scan-

code mode, the program terminates 10 seconds after the last key is

pressed. In ASCII mode, press Ctrl-D to exit. This command may

not function properly under the X Window System, which also

reads from the console device.

Options

-a, --ascii

Print the ASCII character, decimal, octal, and hexadecimal

values of keys pressed.

-h, --help

Print version number ...