Run a command for specific amount of time with an auto key press Post: 302944219

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Top Forums Shell Programming and Scripting Run a command for specific amount of time with an auto key press Post 302944219 by wisecracker on Sunday 17th of May 2015 01:44:49 PM

05-17-2015

Registered User

If I read your requirement correctly, this is a starter piece...
OSX 10.7.5, default bash terminal...

Code:

#!/bin/sh
# key.sh
# This will run as a timer and once a key-value, (line 8 in this code), is set then NOT pressing a key on the keyboard will run for $TIMER length.
# However if you want to exit pressing a key will exit immedaitely and not wait for the $TIMER to timeout...
# Pressing q manually will just rerun the command again IMMEDIATELY... 
TIMER=5
echo "q" > /tmp/YY
read key < /tmp/YY
echo "Character read is $key."
while true
do
	read -n1 -s -t$TIMER key
	if [ "$key" = "q" ]
	then
		echo "Run command(s) here."
	else
		break
	fi
done
echo "This is the key pressed:- $key."

Results:-
Note the second and third "Run command(s) here." was with a key press of "q"...

Code:

Last login: Sun May 17 18:32:39 on ttys000
AMIGA:barrywalker~> cd Desktop/Code/Shell
AMIGA:barrywalker~/Desktop/Code/Shell> chmod 755 key.sh
AMIGA:barrywalker~/Desktop/Code/Shell> ./key.sh
Character read is q.
Run command(s) here.
Run command(s) here.
Run command(s) here.
Run command(s) here.
Run command(s) here.
This is the key pressed:- e.
AMIGA:barrywalker~/Desktop/Code/Shell> _

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LEARN ABOUT FREEBSD

kstash

KSTASH(8)						    BSD System Manager's Manual 						 KSTASH(8)

NAME

     kstash -- store the KDC master password in a file

SYNOPSIS

     kstash [-e string | --enctype=string] [-k file | --key-file=file] [--convert-file] [--random-key] [--master-key-fd=fd] [--random-key]
	    [-h | --help] [--version]

DESCRIPTION

     kstash reads the Kerberos master key and stores it in a file that will be used by the KDC.

     Supported options:

     -e string, --enctype=string
	     the encryption type to use, defaults to DES3-CBC-SHA1.

     -k file, --key-file=file
	     the name of the master key file.

     --convert-file
	     don't ask for a new master key, just read an old master key file, and write it back in the new keyfile format.

     --random-key
	     generate a random master key.

     --master-key-fd=fd
	     filedescriptor to read passphrase from, if not specified the passphrase will be read from the terminal.

FILES

     /var/heimdal/m-key is the default keyfile if no other keyfile is specified.  The format of a Heimdal master key is the same as a keytab, so
     ktutil list can be used to list the content of the file.

SEE ALSO

     kdc(8)

HEIMDAL 
							  April 10, 2007							   HEIMDAL