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Top Forums UNIX for Dummies Questions & Answers making a .sh wait for user input Post 46661 by joneja on Wednesday 21st of January 2004 04:30:06 PM
Old 01-21-2004
Hi,

Well I was trying to see what exactly the script Livinfree posted is doing.

I couldnt understand.

Using man I could get that tput smso and rmso is for getting standout mode seq started and end it.
dd bs sets the blcok size to 1.But why I didnt undertand. Is it because the requirement is that only ONE keystroke is required.

however I couldnt understand how the rest of these work when put together.

Could anyone pls explain.

Thanks.
 

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halt(8) 						      System Manager's Manual							   halt(8)

NAME
halt - Stops the processor SYNOPSIS
/usr/sbin/halt [-d] [-l] [-n] [-q] [-y] DESCRIPTION
If other users are logged into the system, or if the system is operating at a multiuser run level, use the /usr/sbin/shutdown -h command to halt the system. If only the root user is logged in, and you do not plan to restart the system immediately, use the halt command. The halt command writes data to the disks and then stops the processor(s), but does not reboot the machine. You must be the root user to run this command. When the system displays the ....Halt completed.... message, you can turn off power to the machine. If the command is invoked without the -l, -n, or -q flag, the halt program logs the shutdown using the syslogd command and places a record of the shutdown in the login accounting file, /var/adm/wtmp. Using the -q and the -n flags imply the -l flag. FLAGS
Generates a crash dump of the system before halting it. Can be used with any other flag. Does not log the halt using syslog Prevents the sync before stopping, and does not log the halt using syslog Causes a quick halt, does not log the halt using syslog, and makes no attempt to kill all processes Halts the system from a dial-up operation EXAMPLES
To halt the system without logging the shutdown in the log file, enter: halt -l To halt the system quickly, enter: halt -q To halt the sys- tem quickly, also leaving a crash dump for the savecore command, enter: halt -d -q To halt the system from a dial-up, enter: halt -y FILES
Specifies the command path Specifies the syslog daemon Specifies the login accounting file RELATED INFORMATION
Commands: fasthalt(8), reboot(8), savecore(8), shutdown(8), syslogd(8) Functions: reboot(2), sync(2), syslog(3) delim off halt(8)
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