3-5函数库

base.lib

add()
{
echo "`expr $1 + $2`"
}
reduce()
{
echo "`expr $1 - $2`"
}
multiple()
{

add()
{
echo "`expr $1 + $2`"
}
reduce()
{
echo "`expr $1 - $2`"
}
multiple()
{
echo "`expr $1 \* $2`"
}
divide()
{
echo "`expr $1 / $2`"
}

system_info()
{
echo "memory info"
echo 
free -m


echo
echo "*************************************"
echo

echo "disk usage"
echo 
df -h
}

35function.sh

#!/bin.bash
#

. /code/lib/base.lib

add 12 13
reduce 15 12
multiple 12 3
divide 12 3

system_info