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新风花雪月

#!/usr/bin/bash　　#########################################################################
　　# traps
　　#########################################################################
　　# trap when a user is attempting to leave the script
　　trap 'exit_msg 1 0 "Signal Caught. Exiting..."' HUP INT QUIT KILL ABRT
　　trap 'window_size_changed' WINCH                # trap when a user has resized the window
　　#########################################################################
　　#########################################################################
　　# defined/exported variables
　　#########################################################################
　　_MSG_SLEEP_TIME=3               # seconds to sleep for all messages
　　# (if not defined, default will is 1 second)
　　_CUSTNUM_SIZE=6                   # length of a customer number in this location
　　# (if not defined, default is 6)
　　_DEBUG_LEVEL=0                      # log debug messages. log level is accumulative
　　# (i.e. 1 = 1, 2 = 1 & 2, 3 = 1, 2, & 3)
　　# (if not defined, default is 0)
　　# Log levels:
　　#  0 = No messages
　　#  1 = brief messages (start script, errors, etc)
　　#  2 = environment setup (set / env)
　　#  3 = set -x (A LOT of spam)
　　_TMPDIR="/tmp"          # directory to put work/tmp files
　　# (if not defined, default is /tmp)
　　_SP_LOG="${0##*/}.log"   # log of script events
　　_SP_REQUESTS="${HOME}/sp_requests"
　　# file to customer record requests,
　　# also read at startup
　　_MENU_ITEMS=15        # default number of items to display per page
　　# (it not defined, default is 10)
　　LESS="-P LINE\: %l"        # format 'less' prompt. MAN less if more info
　　# export the variables defined above
　　export _MSG_SLEEP_TIME _CUSTNUM_SIZE _DEBUG_LEVEL _TMPDIR
　　_SP_LOG _SP_REQUESTS _MENU_ITEMS
　　#########################################################################