lfs-book-zh_CN/lsb-bootscripts/etc/default/rc

# Begin /etc/default/rc

# Author: DJ Lucas - dj@linuxfromscratch.org
# Version: 1.0 LSB V.3.1

# Global variable inherited by initscripts are in caps
# Local variables for the rc script are in lowercase

# Source site specific rc configuration
. /etc/default/rc.site

# This sets default terminal options.
# stty sane - this has been removed as nobody recalls
# the reason for it in the first place - if no problems arize,
# then it will be removed completely at a later date.

# Setup default values for the environment
umask 022
PATH="/bin:/sbin"

# Find current screen size
if [ -z "${COLUMNS}" ]; then
        COLUMNS=$(stty size)
        COLUMNS=${COLUMNS##* }
fi

# When using remote connections, such as a serial port, stty size returns 0
if [ "${COLUMNS}" = "0" ]; then
        COLUMNS=80
fi

## Measurements for positioning result messages
COL=$((${COLUMNS} - 8))
WCOL=$((${COL} - 2))

# Set Cursur Position Commands, used via echo -e
SET_COL="\\033[${COL}G"      # at the $COL char
SET_WCOL="\\033[${WCOL}G"    # at the $WCOL char
CURS_UP="\\033[1A\\033[0G"   # Up one line, at the 0'th char

# Export the environment variables so they are inherited by the scripts
export PATH SET_COL SET_WCOL CURS_UP BOOTLOG_ENAB

# End /etc/default/rc