实例脚本，判断是否加入开机自启动，服务状态、脚本规范

#!/bin/bash
# Output:
# Result must exactly equal to "3:on,5:on|enable"
#
# Other output is non-compliant.

# Confirm OS Version
unset OS_VERSION

uname -r | grep el5 > /dev/null && OS_VERSION=el5
uname -r | grep el6 > /dev/null && OS_VERSION=el6
uname -r | grep el7 > /dev/null && OS_VERSION=el7

# Check ntp auto start on rhel5 and rhel6
function ntp_boot_start ()
{
local LANG
local ret

LANG="en_US.UTF-8"
ret=$(chkconfig --list ntpd 2>/dev/null|awk '{print $5","$7}')

if [ "$ret" = "" ]; then
ntp_auto=false
echo "$ntp_auto"

elif [ "$ret" != "" -a "$ret" != "3:on,5:on" ];then
#		echo "$ret"
#        echo "Check [ntpd auto start]... FAILED"
ntp_auto=false
echo "$ntp_auto"

else
#		echo "$ret"
ntp_auto=true
echo "$ntp_auto"
fi
}

# Check chrony auto start on rhel7
function chrony_boot_start ()
{
local LANG
local ret

LANG="en_US.UTF-8"
ret=$(systemctl is-enabled chronyd.service 2>/dev/null)

if [ "$ret" = "" ]; then
ntp_auto=false
echo "$ntp_auto"
elif [ "$ret" != "" -a "$ret" != "enabled" ];then
ntp_auto=false
echo "$ntp_auto"
#echo "Change method:"
#echo "systemctl enable chronyd.service"
else
ntp_auto=true
echo "$ntp_auto"
fi
}

#Begin check
if [ "$OS_VERSION" = "el5" -o "$OS_VERSION" = "el6" ];then
ntp_boot_start
elif [ "$OS_VERSION" = "el7" ];then
chrony_boot_start
fi

#!/bin/bash
# Output:
# At this time, it must exactly equal to "UP".
#
# Other output is non-compliant.

# Confirm OS Version
unset OS_VERSION

uname -r | grep el5 > /dev/null && OS_VERSION=el5
uname -r | grep el6 > /dev/null && OS_VERSION=el6
uname -r | grep el7 > /dev/null && OS_VERSION=el7

# Begin check
if [ "$OS_VERSION" = "el5" -o "$OS_VERSION" = "el6" ];then
pidof ntpd &> /dev/null
if [ $? -ne 0 ];then
ntpd_service_status=flase
echo "ntpd_service_status $ntpd_service_status"
#        echo "DOWN"
#        echo "Check [ntp service status]... FAILED"
#echo "Change method:"
#echo "service ntpd start"
else
ntpd_service_status=true
echo "ntpd_service_status $ntpd_service_status"
#        echo "UP"
fi
elif [ "$OS_VERSION" = "el7" ];then
pidof chronyd &> /dev/null
if [ $? -ne 0 ];then
ntpd_service_status=flase
echo "ntpd_service_status $ntpd_service_status"
#        echo "DOWN"
#        echo "Check [chrony service status]... FAILED"
#echo "Change method:"
#echo "systemctl start chronyd.service"
else
ntpd_service_status=true
echo "ntpd_service_status $ntpd_service_status"
#        echo "UP"
fi
fi