部署应用的小脚本

#!/bin/bash
# Author        : standby
# Date          : 2017-05-12
# Description   : Deploy something.

. /etc/init.d/functions

# Usage...
function Usage()
{
    echo -e "Usage: /bin/sh $0 arg1 arg2
 
                  - arg1 like this : data1 | data2 ...
 
                  - arg2 like this : tag"
    exit 2
}
# The core deploy code block here...
function deploy()
{
    # Prepare something...
    # ...
    # Deploy some crontab and script...
    # ...
}
# Verificate the arguments.
function verificate()
{
    result=0
    available=`df -m |grep $1$ |awk '{print $4}'`
    [[ $available -lt 1000000 ]] && result=1
    [[ $2 == x* ]] || result=2
    #[ $2 == x* ] || result=2
    echo $result
}
# Start something processes.
function start_work()
{
    if [ $1 -eq 1 ]
    then
        echo -e "
"
        action "Deploy something successful." /bin/true
        echo -e "
Begin to start something process...
"
        # start something cmd here ...
        if [ $? -eq 0 ]
        then
            action "Start something successful." /bin/true
        else
            action "Start something failed." /bin/false
        fi
    elif [ $1 -eq 2 ]
    then
        action "Deploy something failed." /bin/false
    exit -1
    else
        action "You are not expected to undestand this code block ->_->" /bin/true
    fi
}
# Main code body.
function main()
{
    [[ $1 == dat* ]] || Usage
    result=`verificate $1 $2`
    #echo $result
    if [ $result -eq 0 ]
    then
        #echo "Hello world!"
        deploy $1 $2
        [ $? -eq 0 ] && start_work 1 || start_work 2
    elif [ $result -eq 1 ]
    then
        echo "$1 have less than 1T space left"
        exit 1
    elif [ $result -eq 2 ]
    then
        echo "The arg2 must start with 'x', not $2"
        exit 2
    fi
}
# Start here...
if [ $# -ne 2 ]
then
    Usage
else
    main $1 $2
fi